Flatiron
E825846
Flatiron is a major North American construction firm known for building large-scale infrastructure projects such as bridges, highways, and transit systems.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Flatiron canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9866825 — 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: Flatiron Context triple: [Port Mann Bridge, builder, Flatiron]
-
A.
Flatiron Plaza
Flatiron Plaza is a popular public space in Manhattan known for its views of the Flatiron Building and its role as a pedestrian-friendly gathering spot with seating, events, and nearby food options.
-
B.
Hudson Square
Hudson Square is a neighborhood on Manhattan’s west side known for its former industrial buildings, media and tech offices, and proximity to the Hudson River.
-
C.
Union Square East
Union Square East is the section of roadway forming the eastern edge of Manhattan’s Union Square, lined with notable buildings, shops, and transit access.
-
D.
Gramercy
Gramercy is an upscale, historic neighborhood on Manhattan’s east side, known for its elegant brownstones, tree-lined streets, and the private Gramercy Park.
-
E.
Fort Greene
Fort Greene is a historic and culturally vibrant neighborhood in Brooklyn, New York City, known for its brownstone-lined streets, diverse community, and proximity to cultural institutions and parks.
- 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: Flatiron Target entity description: Flatiron is a major North American construction firm known for building large-scale infrastructure projects such as bridges, highways, and transit systems.
-
A.
Flatiron Plaza
Flatiron Plaza is a popular public space in Manhattan known for its views of the Flatiron Building and its role as a pedestrian-friendly gathering spot with seating, events, and nearby food options.
-
B.
Hudson Square
Hudson Square is a neighborhood on Manhattan’s west side known for its former industrial buildings, media and tech offices, and proximity to the Hudson River.
-
C.
Union Square East
Union Square East is the section of roadway forming the eastern edge of Manhattan’s Union Square, lined with notable buildings, shops, and transit access.
-
D.
Gramercy
Gramercy is an upscale, historic neighborhood on Manhattan’s east side, known for its elegant brownstones, tree-lined streets, and the private Gramercy Park.
-
E.
Fort Greene
Fort Greene is a historic and culturally vibrant neighborhood in Brooklyn, New York City, known for its brownstone-lined streets, diverse community, and proximity to cultural institutions and parks.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
construction company
ⓘ
infrastructure construction firm ⓘ |
| businessModel | contractor ⓘ |
| countryOfOperation |
Canada
NERFINISHED
ⓘ
United States of America ⓘ
surface form:
United States
|
| industry | construction ⓘ |
| knownFor |
complex civil engineering projects
ⓘ
large-scale transportation projects ⓘ |
| market |
infrastructure owners
ⓘ
public sector clients ⓘ transportation agencies ⓘ |
| notableFor | transportation infrastructure construction ⓘ |
| operatesIn | North America ⓘ |
| projectType |
bridge construction
ⓘ
rail infrastructure ⓘ road infrastructure ⓘ tunnel construction ⓘ |
| region | North American construction market ⓘ |
| service |
construction management
ⓘ
design-build ⓘ general contracting ⓘ |
| specialization |
bridges
ⓘ
highways ⓘ large-scale infrastructure projects ⓘ transit systems ⓘ |
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: Flatiron Description of subject: Flatiron is a major North American construction firm known for building large-scale infrastructure projects such as bridges, highways, and transit systems.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.