Flatiron Building (Gooderham Building)
E280554
The Flatiron Building, also known as the Gooderham Building, is a historic red-brick flatiron-shaped office building in downtown Toronto and one of the city's most recognizable architectural landmarks.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Flatiron Building (Gooderham Building) canonical | 3 |
| Gooderham Building | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2572051 — 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 Building (Gooderham Building) Context triple: [St. Lawrence neighbourhood, hasLandmark, Flatiron Building (Gooderham Building)]
-
A.
Flatiron Building
The Flatiron Building is a famous triangular early skyscraper in Manhattan, renowned as an iconic symbol of New York City’s architectural history.
-
B.
Johnson Building
The Johnson Building is a modernist wing of the Boston Public Library’s Copley Square main branch, known for housing its contemporary collections and public services.
-
C.
Bank of Manhattan Trust Building
The Bank of Manhattan Trust Building, now commonly known as 40 Wall Street, is a historic neo-Gothic skyscraper in New York City's Financial District that was briefly one of the tallest buildings in the world.
-
D.
Broadway–Chambers Building
The Broadway–Chambers Building is an early 20th-century New York City skyscraper renowned for its Beaux-Arts design by architect Cass Gilbert.
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E.
Heckscher Building
The Heckscher Building is a historic New York City skyscraper named for the philanthropically prominent Heckscher family.
- 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 Building (Gooderham Building) Target entity description: The Flatiron Building, also known as the Gooderham Building, is a historic red-brick flatiron-shaped office building in downtown Toronto and one of the city's most recognizable architectural landmarks.
-
A.
Flatiron Building
The Flatiron Building is a famous triangular early skyscraper in Manhattan, renowned as an iconic symbol of New York City’s architectural history.
-
B.
Johnson Building
The Johnson Building is a modernist wing of the Boston Public Library’s Copley Square main branch, known for housing its contemporary collections and public services.
-
C.
Bank of Manhattan Trust Building
The Bank of Manhattan Trust Building, now commonly known as 40 Wall Street, is a historic neo-Gothic skyscraper in New York City's Financial District that was briefly one of the tallest buildings in the world.
-
D.
Broadway–Chambers Building
The Broadway–Chambers Building is an early 20th-century New York City skyscraper renowned for its Beaux-Arts design by architect Cass Gilbert.
-
E.
Heckscher Building
The Heckscher Building is a historic New York City skyscraper named for the philanthropically prominent Heckscher family.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
flatiron building
ⓘ
historic building ⓘ landmark ⓘ office building ⓘ |
| alsoKnownAs |
Flatiron Building
ⓘ
Gooderham Building ⓘ |
| architect | David Roberts Jr. ⓘ |
| architecturalStyle |
Romanesque Revival
ⓘ
linked to:
Neo-Romanesque
|
| client | Gooderham and Worts ⓘ |
| constructionStartYear | 1891 ⓘ |
| country | Canada ⓘ |
| function | head office of Gooderham and Worts (historical) ⓘ |
| hasFeature |
Romanesque arches
ⓘ
basement level below street ⓘ prominent cornice ⓘ rounded eastern corner ⓘ |
| hasPublicArtwork | mural on rear wall ⓘ |
| height | about 25 metres ⓘ |
| heritageDesignationBy |
City of Toronto
ⓘ
linked to:
Toronto
|
| heritageDesignationLevel | municipal ⓘ |
| heritageStatus | designated heritage property ⓘ |
| inspiredBy | Fuller Building (New York Flatiron Building) in massing comparison ⓘ |
| isPhotographedLandmark | true ⓘ |
| isTouristAttraction | true ⓘ |
| locatedAtIntersection |
Church Street
ⓘ
Wellington Street East and Front Street East ⓘ |
| locatedInNeighbourhood | St. Lawrence ⓘ |
| location |
Canada
ⓘ
Ontario ⓘ Toronto ⓘ |
| material | red brick ⓘ |
| muralArtist | Derek Michael Besant ⓘ |
| muralCompletionYear | 1980 ⓘ |
| muralTitle | Flatiron Mural ⓘ |
| namedAfter | Gooderham family ⓘ |
| overlooks | Berczy Park ⓘ |
| ownerType | private ⓘ |
| partOf | historic St. Lawrence district streetscape ⓘ |
| precededBy | earlier Gooderham office building on same site ⓘ |
| precededNewYorkFlatiron | true ⓘ |
| roofType | mansard-like roof with dormers ⓘ |
| shape | flatiron ⓘ |
| storeys | 5 ⓘ |
| streetAddress | 49 Wellington Street East ⓘ |
| use | office building ⓘ |
| yearCompleted | 1892 ⓘ |
| yearPrecededNewYorkFlatironBy | about 10 years ⓘ |
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 Building (Gooderham Building) Description of subject: The Flatiron Building, also known as the Gooderham Building, is a historic red-brick flatiron-shaped office building in downtown Toronto and one of the city's most recognizable architectural landmarks.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Flatiron Building (Gooderham Building)