Line 4
E768292
Line 4 is a rapid transit line of the Chongqing Metro system in Chongqing, China, serving as part of the city's urban rail network.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line 4 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T8949104 — 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: Line 4 Context triple: [Chongqing Metro, hasLine, Line 4]
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A.
Line 4
Line 4 is a rapid transit route of the STC Metro system, serving as one of its main urban rail lines.
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B.
Line 4
Line 4 is a proposed circular metro line intended to complete and expand the Seville Metro network in Seville, Spain.
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C.
Line 4
Line 4 is a major line of the Santiago Metro in Chile, serving key residential and commercial areas in the southeastern part of the city.
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D.
Line 4
Line 4 is a circular rapid transit route of the Shanghai Metro system that loops around central districts and provides key transfer connections across the network.
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E.
Line 4
Line 4 is a rapid transit line of the Barcelona Metro network that serves several central and coastal neighborhoods in the city.
- 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: Line 4 Target entity description: Line 4 is a rapid transit line of the Chongqing Metro system in Chongqing, China, serving as part of the city's urban rail network.
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A.
Line 4
Line 4 is a rapid transit line of the Nanjing Metro system in Nanjing, China, serving as one of the city's main urban rail corridors.
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B.
Line 4
Line 4 is a rapid transit route of the STC Metro system, serving as one of its main urban rail lines.
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C.
Line 4
Line 4 is a planned rapid transit route within the future Ho Chi Minh City Metro system in Vietnam.
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D.
Line 4
Line 4 is a rapid transit line of the Guangzhou Metro system in Guangzhou, China, serving key urban and suburban areas along its north–south corridor.
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E.
Line 4
Line 4 is a rapid transit line of the Shenzhen Metro system in Shenzhen, China, serving as one of the city's major north–south corridors.
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf | rapid transit line ⓘ |
| category |
Chongqing Rail Transit lines
ⓘ
linked to:
Chongqing Metro
Metro lines in China ⓘ |
| city | Chongqing ⓘ |
| connectsWith | other lines of Chongqing Rail Transit ⓘ |
| continent | Asia ⓘ |
| country | China ⓘ |
| countrySubdivision |
Chongqing Municipality
ⓘ
linked to:
Chongqing
|
| electrification | electric multiple unit operation ⓘ |
| fareSystem | Chongqing Rail Transit fare system ⓘ |
| gauge | standard gauge ⓘ |
| infrastructureType | urban rail line ⓘ |
| languageOfName | Chinese ⓘ |
| locatedIn |
China
ⓘ
Chongqing ⓘ |
| modeOfTransport | rail ⓘ |
| network | Chongqing Metro ⓘ |
| operator |
Chongqing Rail Transit Corporation
ⓘ
linked to:
Chongqing Rail Transit Group
|
| owner |
Chongqing Municipal Government
ⓘ
linked to:
Chongqing Municipal Government offices
|
| partOf |
Chongqing Rail Transit
ⓘ
linked to:
Chongqing Metro
urban rail network of Chongqing ⓘ |
| primaryFunction | mass transit for urban commuters ⓘ |
| publicTransport | yes ⓘ |
| railwayType | heavy metro ⓘ |
| regionServed | metropolitan area of Chongqing ⓘ |
| safetySystem |
automatic train control
ⓘ
automatic train protection ⓘ |
| serves | urban rail transit in Chongqing ⓘ |
| serviceType | passenger transport ⓘ |
| system |
Chongqing Rail Transit system
ⓘ
linked to:
Chongqing Metro
|
| ticketing | integrated with Chongqing Rail Transit ticketing ⓘ |
| transportType |
metro
ⓘ
rapid transit ⓘ |
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: Line 4 Description of subject: Line 4 is a rapid transit line of the Chongqing Metro system in Chongqing, China, serving as part of the city's urban rail network.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.