Blackwell House on Roosevelt Island
E402641
Blackwell House on Roosevelt Island is a historic 18th-century farmhouse in New York City, recognized as one of the island’s oldest surviving structures and a notable landmark.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Blackwell House on Roosevelt Island canonical | 1 |
| Roosevelt Island historic resources | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3945164 — 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: Blackwell House on Roosevelt Island Context triple: [Blackwell House, hasAlternativeName, Blackwell House on Roosevelt Island]
-
A.
J. B. Duke House, New York City
The J. B. Duke House in New York City is a grand early-20th-century Fifth Avenue mansion, designed in a French Beaux-Arts style and renowned as one of architect Horace Trumbauer’s most opulent residential commissions.
-
B.
Gracie Mansion
Gracie Mansion is a historic Federal-style house in Manhattan that serves as the official residence of the Mayor of New York City.
-
C.
Cornelius Vanderbilt II House, New York City
The Cornelius Vanderbilt II House in New York City was a grand Gilded Age Fifth Avenue mansion, once among the largest and most opulent private residences in the United States.
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D.
Kips Bay
Kips Bay is a residential neighborhood on Manhattan’s East Side in New York City, known for its mix of apartment complexes, medical facilities, and waterfront access along the East River.
-
E.
Brooklyn Historical Society building
The Brooklyn Historical Society building is a landmark Romanesque Revival structure in Brooklyn that houses archives, exhibitions, and programs focused on the history and culture of Brooklyn.
- 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: Blackwell House on Roosevelt Island Target entity description: Blackwell House on Roosevelt Island is a historic 18th-century farmhouse in New York City, recognized as one of the island’s oldest surviving structures and a notable landmark.
-
A.
J. B. Duke House, New York City
The J. B. Duke House in New York City is a grand early-20th-century Fifth Avenue mansion, designed in a French Beaux-Arts style and renowned as one of architect Horace Trumbauer’s most opulent residential commissions.
-
B.
Gracie Mansion
Gracie Mansion is a historic Federal-style house in Manhattan that serves as the official residence of the Mayor of New York City.
-
C.
Cornelius Vanderbilt II House, New York City
The Cornelius Vanderbilt II House in New York City was a grand Gilded Age Fifth Avenue mansion, once among the largest and most opulent private residences in the United States.
-
D.
Kips Bay
Kips Bay is a residential neighborhood on Manhattan’s East Side in New York City, known for its mix of apartment complexes, medical facilities, and waterfront access along the East River.
-
E.
Brooklyn Historical Society building
The Brooklyn Historical Society building is a landmark Romanesque Revival structure in Brooklyn that houses archives, exhibitions, and programs focused on the history and culture of Brooklyn.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
farmhouse
ⓘ
historic house ⓘ landmark ⓘ |
| architecturalStyle | vernacular architecture ⓘ |
| borough | Manhattan ⓘ |
| category |
Historic houses in New York City
ⓘ
Houses in Manhattan ⓘ Roosevelt Island buildings ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| hasBasement | yes ⓘ |
| hasChimney | yes ⓘ |
| hasFloorCount | 2 ⓘ |
| hasFunction |
historic site
ⓘ
residence ⓘ |
| hasGarden | yes ⓘ |
| hasPorch | yes ⓘ |
| heritageDesignation |
New York City Landmark
ⓘ
listed on the National Register of Historic Places ⓘ |
| heritageStatus | protected historic structure ⓘ |
| inception |
18th century
ⓘ
c. 1796 ⓘ |
| isPartOf |
Roosevelt Island
ⓘ
surface form:
Roosevelt Island Historic District
|
| locatedIn |
New York City
ⓘ
New York State ⓘ Roosevelt Island ⓘ United States of America ⓘ
surface form:
United States
|
| locatedOn |
East River
ⓘ
former Blackwell Island ⓘ |
| material |
stone
ⓘ
wood ⓘ |
| namedAfter | Blackwell family ⓘ |
| near |
Chapel of the Good Shepherd
ⓘ
Roosevelt Island Lighthouse ⓘ Roosevelt Island Tramway ⓘ Roosevelt Island subway station ⓘ |
| openToPublic | yes ⓘ |
| operator | Roosevelt Island Operating Corporation ⓘ |
| owner |
New York City
ⓘ
surface form:
City of New York
|
| partOf | one of the oldest surviving structures on Roosevelt Island ⓘ |
| roofShape | gabled roof ⓘ |
| significance |
associated with early settlement of Roosevelt Island
ⓘ
example of 18th-century rural architecture in New York City ⓘ |
| significantEvent | restoration in the late 20th century ⓘ |
| surroundedBy | residential development on Roosevelt Island ⓘ |
| use | museum ⓘ |
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: Blackwell House on Roosevelt Island Description of subject: Blackwell House on Roosevelt Island is a historic 18th-century farmhouse in New York City, recognized as one of the island’s oldest surviving structures and a notable landmark.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Roosevelt Island historic resources