U.S. Steel Tower, Pittsburgh
E288664
The U.S. Steel Tower in Pittsburgh is a prominent steel-framed skyscraper and city landmark known for its distinctive triangular footprint and role as a major office hub.
All labels observed (4)
| Label | Occurrences |
|---|---|
| U.S. Steel Building | 2 |
| U.S. Steel Tower | 1 |
| U.S. Steel Tower, Pittsburgh canonical | 1 |
| US Steel Tower | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2687128 — 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. Steel Tower, Pittsburgh Context triple: [Leslie E. Robertson, designed, U.S. Steel Tower, Pittsburgh]
-
A.
U.S. Bank Tower
U.S. Bank Tower is a prominent skyscraper in Los Angeles known for its distinctive silhouette and status as one of the tallest buildings on the West Coast of the United States.
-
B.
Starrett-Lehigh Building
The Starrett-Lehigh Building is a massive, historic industrial and office complex in Manhattan known for its distinctive horizontal bands of windows and status as a prominent architectural landmark.
-
C.
Metropolitan Life Insurance Company Tower
The Metropolitan Life Insurance Company Tower is a historic early 20th-century skyscraper in Manhattan, modeled after the Campanile in Venice and once the tallest building in the world.
-
D.
Wainwright Building
The Wainwright Building is a pioneering early skyscraper in St. Louis, Missouri, celebrated as a landmark of the Chicago School and modern architectural design.
-
E.
U.S. Steel Yard
U.S. Steel Yard is a minor league baseball stadium in Gary, Indiana, primarily known as the home field of the Gary SouthShore RailCats.
- 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. Steel Tower, Pittsburgh Target entity description: The U.S. Steel Tower in Pittsburgh is a prominent steel-framed skyscraper and city landmark known for its distinctive triangular footprint and role as a major office hub.
-
A.
U.S. Bank Tower
U.S. Bank Tower is a prominent skyscraper in Los Angeles known for its distinctive silhouette and status as one of the tallest buildings on the West Coast of the United States.
-
B.
Starrett-Lehigh Building
The Starrett-Lehigh Building is a massive, historic industrial and office complex in Manhattan known for its distinctive horizontal bands of windows and status as a prominent architectural landmark.
-
C.
Metropolitan Life Insurance Company Tower
The Metropolitan Life Insurance Company Tower is a historic early 20th-century skyscraper in Manhattan, modeled after the Campanile in Venice and once the tallest building in the world.
-
D.
Wainwright Building
The Wainwright Building is a pioneering early skyscraper in St. Louis, Missouri, celebrated as a landmark of the Chicago School and modern architectural design.
-
E.
U.S. Steel Yard
U.S. Steel Yard is a minor league baseball stadium in Gary, Indiana, primarily known as the home field of the Gary SouthShore RailCats.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
high-rise building
ⓘ
landmark ⓘ office building ⓘ skyscraper ⓘ |
| alsoKnownAs |
U.S. Steel Building
ⓘ
linked to:
U.S. Steel Tower, Pittsburgh
US Steel Tower ⓘ
linked to:
U.S. Steel Tower, Pittsburgh
|
| architect |
Harrison & Abramovitz
ⓘ
Harrison, Abramovitz & Abbe ⓘ |
| architecturalStyle | Modernist architecture ⓘ |
| citySkylineRole | dominant feature of Pittsburgh skyline ⓘ |
| constructionStartDate | 1967 ⓘ |
| continent | North America ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| developer | United States Steel Corporation ⓘ |
| engineer | Structural engineering firms associated with Harrison & Abramovitz ⓘ |
| floorArea | approximately 2,300,000 square feet ⓘ |
| floorCount | 64 ⓘ |
| formerName |
U.S. Steel Building
ⓘ
linked to:
U.S. Steel Tower, Pittsburgh
|
| hasFeature |
central core design
ⓘ
three chamfered corners ⓘ triangular footprint ⓘ |
| hasHelipad | yes ⓘ |
| height |
256 meters
ⓘ
841 feet ⓘ |
| locatedIn |
Allegheny County
ⓘ
Downtown Pittsburgh ⓘ
linked to:
Pittsburgh, Pennsylvania
Pennsylvania ⓘ |
| location |
Pittsburgh
ⓘ
linked to:
Pittsburgh, Pennsylvania
|
| material |
COR-TEN steel
ⓘ
steel ⓘ |
| namedAfter | United States Steel Corporation ⓘ |
| notableFor |
triangular plan with three massive corner columns
ⓘ
use of COR-TEN weathering steel on exterior ⓘ |
| openingDate | 1971 ⓘ |
| owner | U.S. Steel Real Estate or successors ⓘ |
| primaryFunction | corporate offices ⓘ |
| ranking |
one of the tallest buildings in Pennsylvania
ⓘ
tallest building in Pittsburgh ⓘ |
| region | Western Pennsylvania ⓘ |
| roofSignage | UPMC logo ⓘ |
| roofType | flat roof ⓘ |
| streetAddress | 600 Grant Street ⓘ |
| structuralSystem | steel frame ⓘ |
| tenant |
UPMC (University of Pittsburgh Medical Center)
ⓘ
linked to:
University of Pittsburgh Medical Center
United States Steel Corporation ⓘ |
| toppedOut | 1969 ⓘ |
| uses |
commercial space
ⓘ
office space ⓘ |
| yearCompleted | 1970 ⓘ |
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. Steel Tower, Pittsburgh Description of subject: The U.S. Steel Tower in Pittsburgh is a prominent steel-framed skyscraper and city landmark known for its distinctive triangular footprint and role as a major office hub.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: U.S. Steel Tower, Pittsburgh
subject linked to:
U.S. Steel Tower, Pittsburgh
linked to: U.S. Steel Tower, Pittsburgh
subject linked to:
U.S. Steel Tower, Pittsburgh
linked to: U.S. Steel Tower, Pittsburgh
subject linked to:
U.S. Steel Tower, Pittsburgh
linked to: U.S. Steel Tower, Pittsburgh