Macomb’s Dam
E149944
Macomb’s Dam was a historic Harlem River crossing in New York City that preceded and was ultimately superseded by the Macombs Dam Bridge.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Macombs Dam | 3 |
| Macomb’s Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1164679 — 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: Macomb’s Dam Context triple: [Macombs Dam Bridge, replaced, Macomb’s Dam]
-
A.
Conklingville Dam
Conklingville Dam is a concrete gravity dam in New York that created the Great Sacandaga Lake reservoir for flood control and hydroelectric power generation.
-
B.
Parker Dam
Parker Dam is a concrete arch-gravity dam on the Colorado River best known for creating Lake Havasu and supplying water and hydroelectric power to parts of California and Arizona.
-
C.
Pickwick Landing Dam
Pickwick Landing Dam is a Tennessee Valley Authority hydroelectric and navigation dam on the Tennessee River in southwestern Tennessee.
-
D.
Croton Falls Dam
Croton Falls Dam is a masonry gravity dam in Westchester County, New York, that forms the Croton Falls Reservoir as part of New York City’s water supply system.
-
E.
Great Stone Dam
The Great Stone Dam is a historic 19th-century granite dam in Lawrence, Massachusetts, built to harness the Merrimack River for industrial waterpower and central to the city’s mill-era development.
- 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: Macomb’s Dam Target entity description: Macomb’s Dam was a historic Harlem River crossing in New York City that preceded and was ultimately superseded by the Macombs Dam Bridge.
-
A.
Conklingville Dam
Conklingville Dam is a concrete gravity dam in New York that created the Great Sacandaga Lake reservoir for flood control and hydroelectric power generation.
-
B.
Parker Dam
Parker Dam is a concrete arch-gravity dam on the Colorado River best known for creating Lake Havasu and supplying water and hydroelectric power to parts of California and Arizona.
-
C.
Pickwick Landing Dam
Pickwick Landing Dam is a Tennessee Valley Authority hydroelectric and navigation dam on the Tennessee River in southwestern Tennessee.
-
D.
Croton Falls Dam
Croton Falls Dam is a masonry gravity dam in Westchester County, New York, that forms the Croton Falls Reservoir as part of New York City’s water supply system.
-
E.
Great Stone Dam
The Great Stone Dam is a historic 19th-century granite dam in Lawrence, Massachusetts, built to harness the Merrimack River for industrial waterpower and central to the city’s mill-era development.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
historic river crossing
ⓘ
transportation infrastructure ⓘ |
| connects |
Manhattan
ⓘ
The Bronx ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses | Harlem River ⓘ |
| followedBy | Macombs Dam Bridge ⓘ |
| function |
dam
ⓘ
river crossing ⓘ |
| hasSuccessor | Macombs Dam Bridge ⓘ |
| historicPeriod | 19th century ⓘ |
| locatedIn |
Bronx County
ⓘ
Harlem River ⓘ Manhattan ⓘ New York City ⓘ New York County ⓘ The Bronx ⓘ |
| namedAfter | Robert Macomb ⓘ |
| partOf |
New York City transportation network
ⓘ
linked to:
New York City street network
|
| precededBy | natural ford across the Harlem River ⓘ |
| replacedBy | Macombs Dam Bridge ⓘ |
| significance | early crossing of the Harlem River ⓘ |
| status |
no longer extant
ⓘ
superseded ⓘ |
| supersededBy | Macombs Dam Bridge ⓘ |
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: Macomb’s Dam Description of subject: Macomb’s Dam was a historic Harlem River crossing in New York City that preceded and was ultimately superseded by the Macombs Dam Bridge.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Macomb’s Dam
linked to: Macomb’s Dam
linked to: Macomb’s Dam