IJ
E159017
The IJ is a body of water in Amsterdam that serves as a key waterway for transport and shipping, separating the city center from Amsterdam-Noord.
All labels observed (1)
| Label | Occurrences |
|---|---|
| IJ canonical | 30 |
How this entity was disambiguated
This entity first appeared as the object of triple T1375572 — 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: IJ Context triple: [Amsterdam ferry network, operatesOnWaterway, IJ]
-
A.
J
J is a New York City Subway service that runs through Brooklyn and Queens into Manhattan, serving neighborhoods in eastern Brooklyn and southern Queens.
-
B.
J
J is one of the passenger concourses at Miami International Airport, serving as a terminal area with gates, amenities, and airline operations for departing and arriving flights.
-
C.
JO
JO is the two-letter ISO 3166-1 alpha-2 country code assigned to the Hashemite Kingdom of Jordan.
-
D.
IA
IA is the standard two-letter U.S. Postal Service abbreviation for the state of Iowa.
-
E.
Jul
Jul is a common abbreviated form of the given name Julian.
- 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: IJ Target entity description: The IJ is a body of water in Amsterdam that serves as a key waterway for transport and shipping, separating the city center from Amsterdam-Noord.
-
A.
J
J is a New York City Subway service that runs through Brooklyn and Queens into Manhattan, serving neighborhoods in eastern Brooklyn and southern Queens.
-
B.
J
J is one of the passenger concourses at Miami International Airport, serving as a terminal area with gates, amenities, and airline operations for departing and arriving flights.
-
C.
JO
JO is the two-letter ISO 3166-1 alpha-2 country code assigned to the Hashemite Kingdom of Jordan.
-
D.
IA
IA is the standard two-letter U.S. Postal Service abbreviation for the state of Iowa.
-
E.
Jul
Jul is a common abbreviated form of the given name Julian.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
body of water
ⓘ
lake ⓘ waterway ⓘ |
| adjacentTo |
Amsterdam Centraal
ⓘ
surface form:
Amsterdam Centraal station
Amsterdam North ⓘ
surface form:
Amsterdam-Noord
Houthaven ⓘ
surface form:
Houthavens
Java (Indonesian island) ⓘ
surface form:
Java Island
KNSM Island NERFINISHED ⓘ |
| connectedTo |
IJmeer
ⓘ
Markermeer ⓘ North Sea Canal ⓘ |
| country | Netherlands ⓘ |
| crossedBy |
First Coen Tunnel
ⓘ
surface form:
Coen Tunnel
IJ Tunnel ⓘ Second Coen Tunnel ⓘ |
| etymology | possibly from Old Dutch word for water or estuary ⓘ |
| flowsThrough |
Amsterdam metropolitan area
ⓘ
surface form:
Amsterdam urban area
|
| hasBridge | IJburg bridges vicinity ⓘ |
| hasFeature | harbours and quays along Amsterdam waterfront ⓘ |
| hasFerryService |
GVB Amsterdam
ⓘ
surface form:
GVB ferries
|
| hasInfrastructure | cruise ship terminal in Amsterdam ⓘ |
| hasPort | Port of Amsterdam ⓘ |
| hasUse |
industrial shipping
ⓘ
passenger ferries ⓘ tourist boat traffic ⓘ |
| historicalConnection | Zuiderzee ⓘ |
| historicalType | bay ⓘ |
| languageOfName | Dutch ⓘ |
| locatedIn |
Amsterdam
ⓘ
province of North Holland ⓘ |
| mouthLocation | North Sea Canal ⓘ |
| near |
A’DAM Tower
ⓘ
surface form:
Amsterdam A’DAM Tower
EYE Filmmuseum ⓘ |
| partOf |
Amsterdam metropolitan area
ⓘ
Dutch inland waterway network ⓘ IJ basin ⓘ |
| role |
important shipping route to Port of Amsterdam
ⓘ
major transport corridor in Amsterdam ⓘ |
| separates |
Amsterdam-Centrum
ⓘ
surface form:
Amsterdam city centre
Amsterdam North ⓘ
surface form:
Amsterdam-Noord
|
| usedFor |
ferry transport
ⓘ
inland shipping ⓘ maritime transport ⓘ recreation ⓘ |
| waterwayType | tidal waterway ⓘ |
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: IJ Description of subject: The IJ is a body of water in Amsterdam that serves as a key waterway for transport and shipping, separating the city center from Amsterdam-Noord.
Referenced by (30)
Full triples — surface form annotated when it differs from this entity's canonical label.