| 
                                    
                                        gptkbp:instanceOf
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:river
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:area
                                    
                                 | 
                                
                                    
                                        
                                            
                                            521,830 square kilometers
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:borderedBy
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Ontario
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:borders
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Illinois
                                        
                                         
                                    
                                        
                                            gptkb:Indiana
                                        
                                         
                                    
                                        
                                            gptkb:Michigan
                                        
                                         
                                    
                                        
                                            gptkb:Minnesota
                                        
                                         
                                    
                                        
                                            gptkb:New_York
                                        
                                         
                                    
                                        
                                            gptkb:Ohio
                                        
                                         
                                    
                                        
                                            gptkb:Pennsylvania
                                        
                                         
                                    
                                        
                                            gptkb:Wisconsin
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:contains
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Great_Lakes
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:drainedBy
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Atlantic_Ocean
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:drainsVia
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Saint_Lawrence_River
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:environmentalImpact
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:invasive_species
                                        
                                         
                                    
                                        
                                            
                                            habitat loss
                                        
                                        
                                         
                                    
                                        
                                            
                                            pollution
                                        
                                        
                                         
                                    
                                        
                                            
                                            water level fluctuation
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:governedBy
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Great_Lakes_Water_Quality_Agreement
                                        
                                         
                                    
                                        
                                            gptkb:International_Joint_Commission
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:hasLake
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Lake_Erie
                                        
                                         
                                    
                                        
                                            gptkb:Lake_Huron
                                        
                                         
                                    
                                        
                                            gptkb:Lake_Michigan
                                        
                                         
                                    
                                        
                                            gptkb:Lake_Ontario
                                        
                                         
                                    
                                        
                                            gptkb:Lake_Superior
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:hasPart
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Canada
                                        
                                         
                                    
                                        
                                            gptkb:United_States
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:inflow
                                    
                                 | 
                                
                                    
                                        
                                            
                                            various tributaries
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:locatedIn
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:North_America
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:mainRiver
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Detroit_River
                                        
                                         
                                    
                                        
                                            gptkb:Saint_Lawrence_River
                                        
                                         
                                    
                                        
                                            gptkb:Niagara_River
                                        
                                         
                                    
                                        
                                            gptkb:St._Clair_River
                                        
                                         
                                    
                                        
                                            gptkb:St._Marys_River
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:majorCity
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Buffalo
                                        
                                         
                                    
                                        
                                            gptkb:Chicago
                                        
                                         
                                    
                                        
                                            gptkb:Cleveland
                                        
                                         
                                    
                                        
                                            gptkb:Detroit
                                        
                                         
                                    
                                        
                                            gptkb:Hamilton
                                        
                                         
                                    
                                        
                                            gptkb:Toronto
                                        
                                         
                                    
                                        
                                            gptkb:Milwaukee
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:outflow
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Saint_Lawrence_River
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:population
                                    
                                 | 
                                
                                    
                                        
                                            
                                            over 30 million
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:significance
                                    
                                 | 
                                
                                    
                                        
                                            
                                            important for shipping
                                        
                                        
                                         
                                    
                                        
                                            
                                            important for drinking water
                                        
                                        
                                         
                                    
                                        
                                            
                                            important for industry
                                        
                                        
                                         
                                    
                                        
                                            
                                            important for recreation
                                        
                                        
                                         
                                    
                                        
                                            
                                            largest group of freshwater lakes by total area
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:bfsParent
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Finger_Lakes
                                        
                                         
                                    
                                        
                                            gptkb:Niagara_Falls
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:bfsLayer
                                    
                                 | 
                                
                                    
                                        
                                            
                                            4
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        https://www.w3.org/2000/01/rdf-schema#label
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Great Lakes Basin
                                        
                                        
                                         
                                    
                                 |