Chongqing Rail Transit Line 4
E693745
Chongqing Rail Transit Line 4 is an urban metro line in Chongqing, China, that forms part of the Chongqing Rail Transit network and connects key districts across the city.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Chongqing Rail Transit Line 4 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7782435 — 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: Chongqing Rail Transit Line 4 Context triple: [Chongqing North Railway Station, servedByMetroLine, Chongqing Rail Transit Line 4]
-
A.
Chongqing Metro
Chongqing Metro is the rapid transit system serving the mountainous megacity of Chongqing, China, known for its extensive use of straddle-beam monorail lines and dramatic elevated tracks.
-
B.
Chengdu Metro Line 3
Chengdu Metro Line 3 is a major rapid transit line in Chengdu’s metro system that connects key commercial, residential, and cultural areas across the city.
-
C.
Shanghai Metro Line 4
Shanghai Metro Line 4 is a circular rapid transit line in Shanghai’s metro system that loops around the city center and connects major hubs including Shanghai Stadium.
-
D.
Wuhan Metro Line 4
Wuhan Metro Line 4 is an east–west rapid transit line in Wuhan, China, known for connecting major urban districts and serving key transport hubs across the city.
-
E.
Chengdu Metro Line 2
Chengdu Metro Line 2 is a major east–west rapid transit line in Chengdu’s metro system, connecting key commercial, residential, and transport hubs across 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: Chongqing Rail Transit Line 4 Target entity description: Chongqing Rail Transit Line 4 is an urban metro line in Chongqing, China, that forms part of the Chongqing Rail Transit network and connects key districts across the city.
-
A.
Chongqing Metro
Chongqing Metro is the rapid transit system serving the mountainous megacity of Chongqing, China, known for its extensive use of straddle-beam monorail lines and dramatic elevated tracks.
-
B.
Chengdu Metro Line 3
Chengdu Metro Line 3 is a major rapid transit line in Chengdu’s metro system that connects key commercial, residential, and cultural areas across the city.
-
C.
Shanghai Metro Line 4
Shanghai Metro Line 4 is a circular rapid transit line in Shanghai’s metro system that loops around the city center and connects major hubs including Shanghai Stadium.
-
D.
Wuhan Metro Line 4
Wuhan Metro Line 4 is an east–west rapid transit line in Wuhan, China, known for connecting major urban districts and serving key transport hubs across the city.
-
E.
Chengdu Metro Line 2
Chengdu Metro Line 2 is a major east–west rapid transit line in Chengdu’s metro system, connecting key commercial, residential, and transport hubs across the city.
- F. None of above. chosen
Statements (28)
| Predicate | Object |
|---|---|
| instanceOf |
Chongqing Rail Transit line
ⓘ
metro line ⓘ |
| color | blue ⓘ |
| connects | key districts of Chongqing ⓘ |
| continent | Asia ⓘ |
| country | China ⓘ |
| electrification | overhead line ⓘ |
| fareSystem | Chongqing Rail Transit fare system ⓘ |
| hasPlatformType |
island platform
ⓘ
side platform ⓘ |
| hasRollingStockType | electric multiple unit ⓘ |
| isPartOfNetwork |
Chongqing Rail Transit network
ⓘ
linked to:
Chongqing Metro
|
| lineNumber | 4 ⓘ |
| locale |
Chongqing, China
ⓘ
linked to:
Chongqing
|
| locatedIn | Chongqing ⓘ |
| locatedInTimeZone | China Standard Time ⓘ |
| numberOfTracks | 2 ⓘ |
| openingDate | 2018 ⓘ |
| 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
|
| publicTransportMode | metro ⓘ |
| safetySystem | automatic train protection ⓘ |
| servesCity | Chongqing ⓘ |
| serviceType | rapid transit ⓘ |
| system |
Chongqing Rail Transit
ⓘ
linked to:
Chongqing Metro
|
| trackGauge | standard gauge ⓘ |
| transitType | urban rail ⓘ |
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: Chongqing Rail Transit Line 4 Description of subject: Chongqing Rail Transit Line 4 is an urban metro line in Chongqing, China, that forms part of the Chongqing Rail Transit network and connects key districts across the city.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.