East River (via Rikers Island)
E520567
The East River is a tidal strait in New York City that separates Manhattan from Queens and Brooklyn and surrounds Rikers Island, home to the city’s main jail complex.
All labels observed (2)
| Label | Occurrences |
|---|---|
| East River (adjacent via Brooklyn Navy Yard) | 1 |
| East River (via Rikers Island) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5440753 — 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: East River (via Rikers Island) Context triple: [Correctional Institution for Men, locatedInBodyOfWater, East River (via Rikers Island)]
-
A.
Bronx County (via water)
Bronx County is a borough of New York City, commonly known as the Bronx, located north of Manhattan and Queens and recognized as the birthplace of hip-hop culture.
-
B.
Harlem River
The Harlem River is a tidal strait in New York City that separates Manhattan from the Bronx and connects the Hudson River to the East River.
-
C.
Harlem River Ship Canal
The Harlem River Ship Canal is a man-made waterway in New York City that connects the Hudson and Harlem Rivers, effectively separating Marble Hill from the rest of Manhattan.
-
D.
Flushing River
Flushing River is a tidal river in northern Queens, New York City, that flows through Flushing Meadows–Corona Park into Flushing Bay.
-
E.
Newtown Creek
Newtown Creek is a heavily industrialized tidal estuary in New York City that forms part of the boundary between Brooklyn and Queens and is known as one of the most polluted waterways in the United States.
- 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: East River (via Rikers Island) Target entity description: The East River is a tidal strait in New York City that separates Manhattan from Queens and Brooklyn and surrounds Rikers Island, home to the city’s main jail complex.
-
A.
Bronx County (via water)
Bronx County is a borough of New York City, commonly known as the Bronx, located north of Manhattan and Queens and recognized as the birthplace of hip-hop culture.
-
B.
Harlem River
The Harlem River is a tidal strait in New York City that separates Manhattan from the Bronx and connects the Hudson River to the East River.
-
C.
Harlem River Ship Canal
The Harlem River Ship Canal is a man-made waterway in New York City that connects the Hudson and Harlem Rivers, effectively separating Marble Hill from the rest of Manhattan.
-
D.
Flushing River
Flushing River is a tidal river in northern Queens, New York City, that flows through Flushing Meadows–Corona Park into Flushing Bay.
-
E.
Newtown Creek
Newtown Creek is a heavily industrialized tidal estuary in New York City that forms part of the boundary between Brooklyn and Queens and is known as one of the most polluted waterways in the United States.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
island
ⓘ
jail complex ⓘ tidal strait ⓘ waterway ⓘ |
| adjacentToBorough |
Brooklyn
NERFINISHED
ⓘ
Manhattan NERFINISHED ⓘ Queens NERFINISHED ⓘ The Bronx NERFINISHED ⓘ |
| connectedTo |
Bronx Kill
NERFINISHED
ⓘ
Harlem River NERFINISHED ⓘ |
| connects |
Long Island Sound
NERFINISHED
ⓘ
Upper New York Bay NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crossedBy |
Brooklyn Bridge
NERFINISHED
ⓘ
Hell Gate Bridge NERFINISHED ⓘ Manhattan Bridge NERFINISHED ⓘ Queensboro Bridge NERFINISHED ⓘ Robert F. Kennedy Bridge NERFINISHED ⓘ Throgs Neck Bridge NERFINISHED ⓘ Whitestone Bridge NERFINISHED ⓘ Williamsburg Bridge NERFINISHED ⓘ |
| flowCharacteristic | tidal ⓘ |
| function | main New York City jail complex ⓘ |
| hasCurrent | strong tidal currents ⓘ |
| hasFerryRoute | NYC Ferry East River route ⓘ |
| hasIsland |
North Brother Island
NERFINISHED
ⓘ
Randalls Island NERFINISHED ⓘ Rikers Island NERFINISHED ⓘ Roosevelt Island NERFINISHED ⓘ South Brother Island NERFINISHED ⓘ Wards Island NERFINISHED ⓘ |
| locatedIn |
East River
NERFINISHED
ⓘ
New York City ⓘ New York State NERFINISHED ⓘ |
| near | Rikers Island jail complex NERFINISHED ⓘ |
| notableSection | Hell Gate NERFINISHED ⓘ |
| operatedBy | New York City Department of Correction NERFINISHED ⓘ |
| partOf |
New York Harbor
NERFINISHED
ⓘ
borough of The Bronx for administrative purposes ⓘ |
| separates |
Brooklyn
NERFINISHED
ⓘ
Manhattan NERFINISHED ⓘ Queens NERFINISHED ⓘ |
| surrounds | Rikers Island NERFINISHED ⓘ |
| usedFor |
ferry transport
ⓘ
recreation ⓘ shipping ⓘ |
| waterType | brackish ⓘ |
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: East River (via Rikers Island) Description of subject: The East River is a tidal strait in New York City that separates Manhattan from Queens and Brooklyn and surrounds Rikers Island, home to the city’s main jail complex.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
East River (adjacent via Brooklyn Navy Yard)