U.S. Route 40 in Maryland
E449833
U.S. Route 40 in Maryland is a major east–west highway that traverses the state, connecting urban centers like Baltimore with rural and mountainous regions including the South Mountain area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| U.S. Route 40 in Maryland canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4527589 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: U.S. Route 40 in Maryland Context triple: [South Mountain, transportationCorridorNearby, U.S. Route 40 in Maryland]
-
A.
U.S. Route 4
U.S. Route 4 is an east–west United States highway in the Northeast that runs between New York and New Hampshire, connecting cities such as Albany and Portsmouth.
-
B.
Old U.S. Route 40
Old U.S. Route 40 is a historic transcontinental highway that once connected the U.S. East and West Coasts, serving as a major early 20th-century travel and commerce route across the country.
-
C.
Maryland Route 100
Maryland Route 100 is an east–west state highway in central Maryland that serves as a major commuter and connector route between suburbs such as Glen Burnie and key corridors like I-95 and MD 295.
-
D.
Maryland Route 404
Maryland Route 404 is a primary state highway on Maryland’s Eastern Shore that serves as a major east–west route to the Delaware beaches and coastal resort areas.
-
E.
Maryland Route 4
Maryland Route 4 is a major state highway in Maryland that connects the Washington, D.C. suburbs with Southern Maryland, serving as a key commuter and regional thoroughfare.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: U.S. Route 40 in Maryland Target entity description: U.S. Route 40 in Maryland is a major east–west highway that traverses the state, connecting urban centers like Baltimore with rural and mountainous regions including the South Mountain area.
-
A.
U.S. Route 4
U.S. Route 4 is an east–west United States highway in the Northeast that runs between New York and New Hampshire, connecting cities such as Albany and Portsmouth.
-
B.
Old U.S. Route 40
Old U.S. Route 40 is a historic transcontinental highway that once connected the U.S. East and West Coasts, serving as a major early 20th-century travel and commerce route across the country.
-
C.
Maryland Route 100
Maryland Route 100 is an east–west state highway in central Maryland that serves as a major commuter and connector route between suburbs such as Glen Burnie and key corridors like I-95 and MD 295.
-
D.
Maryland Route 404
Maryland Route 404 is a primary state highway on Maryland’s Eastern Shore that serves as a major east–west route to the Delaware beaches and coastal resort areas.
-
E.
Maryland Route 4
Maryland Route 4 is a major state highway in Maryland that connects the Washington, D.C. suburbs with Southern Maryland, serving as a key commuter and regional thoroughfare.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
U.S. Numbered Highway
ⓘ
east–west highway ⓘ |
| connectsCity |
Baltimore
NERFINISHED
ⓘ
Cumberland NERFINISHED ⓘ Ellicott City NERFINISHED ⓘ Frederick NERFINISHED ⓘ Hagerstown NERFINISHED ⓘ |
| connectsRegion |
Baltimore metropolitan area
NERFINISHED
ⓘ
South Mountain area NERFINISHED ⓘ central Maryland ⓘ western Maryland NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crosses |
Monocacy River
NERFINISHED
ⓘ
Patapsco River NERFINISHED ⓘ South Mountain NERFINISHED ⓘ |
| followsHistoricRoute |
Baltimore National Pike
NERFINISHED
ⓘ
National Road NERFINISHED ⓘ |
| hasSection |
Baltimore National Pike
NERFINISHED
ⓘ
National Pike NERFINISHED ⓘ Pulaski Highway NERFINISHED ⓘ |
| hasTerminus |
Maryland–Delaware state line in Elkton area
ⓘ
Maryland–Pennsylvania state line near Green Spring NERFINISHED ⓘ |
| highwaySystem | United States Numbered Highway System ⓘ |
| historicalSignificance | follows original National Road corridor through Maryland ⓘ |
| locatedIn | Maryland ⓘ |
| maintainedBy | Maryland State Highway Administration NERFINISHED ⓘ |
| overlapsWith |
Interstate 68 in Maryland
NERFINISHED
ⓘ
Interstate 70 in Maryland NERFINISHED ⓘ U.S. Route 15 in Maryland NERFINISHED ⓘ |
| parallelTo |
Interstate 68 in Maryland
NERFINISHED
ⓘ
Interstate 70 in Maryland NERFINISHED ⓘ |
| partOf | U.S. Route 40 NERFINISHED ⓘ |
| passesThrough |
Allegany County, Maryland
NERFINISHED
ⓘ
Baltimore City NERFINISHED ⓘ Baltimore County, Maryland NERFINISHED ⓘ Carroll County, Maryland NERFINISHED ⓘ Cecil County, Maryland NERFINISHED ⓘ Frederick County, Maryland NERFINISHED ⓘ Garrett County, Maryland NERFINISHED ⓘ Harford County, Maryland NERFINISHED ⓘ Howard County, Maryland NERFINISHED ⓘ Washington County, Maryland NERFINISHED ⓘ |
| routeNumber | 40 ⓘ |
| serves |
mountainous regions in Maryland
ⓘ
rural areas in Maryland ⓘ urban areas in Maryland ⓘ |
| state | Maryland ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: U.S. Route 40 in Maryland Description of subject: U.S. Route 40 in Maryland is a major east–west highway that traverses the state, connecting urban centers like Baltimore with rural and mountainous regions including the South Mountain area.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.