Random triples
| Subject | Object |
|---|---|
| gptkb:Duluth_North_Pier_Lighthouse | guides ships into Duluth Harbor |
| gptkb:Griffith_Island_Light | aids navigation in Georgian Bay |
| gptkb:Harbor_Point_Lighthouse | guides ships into Little Traverse Bay |
| gptkb:Coffee_Pot_Lighthouse | aids navigation in the Bay of Fundy |
| gptkb:Portage_River_(Keweenaw_Waterway)_Upper_Entrance_Light | guides vessels into Keweenaw Waterway from Lake Superior |