21st Street NW
E497352
21st Street NW is a north–south street in Washington, D.C.’s Northwest quadrant that runs through several central neighborhoods near downtown and the Foggy Bottom area.
All labels observed (2)
| Label | Occurrences |
|---|---|
| 21st Street (numbered street system of Washington, D.C.) | 1 |
| 21st Street NW canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4571235 — 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: 21st Street NW Context triple: [K Street, crosses, 21st Street NW]
-
A.
23rd Street NW
23rd Street NW is a major north–south thoroughfare in Washington, D.C., running through the Foggy Bottom area near the U.S. Department of State and George Washington University.
-
B.
19th Street NW
19th Street NW is a major north–south street in Washington, D.C., running through several neighborhoods including the Dupont Circle area.
-
C.
I Street NW
I Street NW is a prominent east–west thoroughfare in downtown Washington, D.C., running through key commercial and cultural areas including the Chinatown neighborhood.
-
D.
15th Street NW
15th Street NW is a major north–south thoroughfare in Washington, D.C., running through the downtown area near the National Mall and several key federal landmarks.
-
E.
18th Street NW
18th Street NW is a major north–south thoroughfare in Washington, D.C., running through several prominent neighborhoods and near key federal landmarks.
- 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: 21st Street NW Target entity description: 21st Street NW is a north–south street in Washington, D.C.’s Northwest quadrant that runs through several central neighborhoods near downtown and the Foggy Bottom area.
-
A.
23rd Street NW
23rd Street NW is a major north–south thoroughfare in Washington, D.C., running through the Foggy Bottom area near the U.S. Department of State and George Washington University.
-
B.
19th Street NW
19th Street NW is a major north–south street in Washington, D.C., running through several neighborhoods including the Dupont Circle area.
-
C.
I Street NW
I Street NW is a prominent east–west thoroughfare in downtown Washington, D.C., running through key commercial and cultural areas including the Chinatown neighborhood.
-
D.
15th Street NW
15th Street NW is a major north–south thoroughfare in Washington, D.C., running through the downtown area near the National Mall and several key federal landmarks.
-
E.
18th Street NW
18th Street NW is a major north–south thoroughfare in Washington, D.C., running through several prominent neighborhoods and near key federal landmarks.
- F. None of above. chosen
Statements (12)
| Predicate | Object |
|---|---|
| instanceOf |
road in Washington, D.C.
ⓘ
street ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| direction | north–south ⓘ |
| hasQuadrantDesignation | NW ⓘ |
| locatedIn |
Northwest quadrant of Washington, D.C.
ⓘ
linked to:
Northwest Washington, D.C.
Washington, D.C. ⓘ |
| namedAfter |
21st Street (numbered street system of Washington, D.C.)
ⓘ
linked to:
21st Street NW
|
| near | central neighborhoods of Washington, D.C. ⓘ |
| partOf | street grid of Washington, D.C. ⓘ |
| passesThrough |
Downtown Washington, D.C. area
ⓘ
linked to:
Downtown Washington, D.C.
Foggy Bottom ⓘ
linked to:
Foggy Bottom neighborhood
|
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: 21st Street NW Description of subject: 21st Street NW is a north–south street in Washington, D.C.’s Northwest quadrant that runs through several central neighborhoods near downtown and the Foggy Bottom area.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: 21st Street NW