Nanjing Metro Line 2
E680691
Nanjing Metro Line 2 is an east–west rapid transit line in Nanjing’s metro system that connects key urban districts and major transport hubs across the city.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Line 2 (Nanjing Metro) | 1 |
| Nanjing Metro Line 2 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7636055 — 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: Nanjing Metro Line 2 Context triple: [Jianye District, traversedBy, Nanjing Metro Line 2]
-
A.
Nanjing Metro Line S1
Nanjing Metro Line S1 is an airport rail link in Nanjing, China, providing rapid transit service between the city’s urban area and Nanjing Lukou International Airport.
-
B.
Nanjing Metro
Nanjing Metro is the rapid transit system serving the city of Nanjing, China, comprising multiple urban and suburban lines that form a major part of the city's public transportation network.
-
C.
Changzhou Metro
Changzhou Metro is the urban rapid transit system serving the city of Changzhou in Jiangsu Province, China.
-
D.
Shanghai Metro Line 2
Shanghai Metro Line 2 is a major east–west rapid transit line in Shanghai that connects key commercial, financial, and transport hubs including the city’s main shopping streets and both international airports.
-
E.
Shanghai Metro Line 22
Shanghai Metro Line 22 is a planned rapid transit line in Shanghai’s metro system intended to serve and connect the suburban Songjiang District with the broader urban network.
- 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: Nanjing Metro Line 2 Target entity description: Nanjing Metro Line 2 is an east–west rapid transit line in Nanjing’s metro system that connects key urban districts and major transport hubs across the city.
-
A.
Nanjing Metro Line S1
Nanjing Metro Line S1 is an airport rail link in Nanjing, China, providing rapid transit service between the city’s urban area and Nanjing Lukou International Airport.
-
B.
Nanjing Metro
Nanjing Metro is the rapid transit system serving the city of Nanjing, China, comprising multiple urban and suburban lines that form a major part of the city's public transportation network.
-
C.
Changzhou Metro
Changzhou Metro is the urban rapid transit system serving the city of Changzhou in Jiangsu Province, China.
-
D.
Shanghai Metro Line 2
Shanghai Metro Line 2 is a major east–west rapid transit line in Shanghai that connects key commercial, financial, and transport hubs including the city’s main shopping streets and both international airports.
-
E.
Shanghai Metro Line 22
Shanghai Metro Line 22 is a planned rapid transit line in Shanghai’s metro system intended to serve and connect the suburban Songjiang District with the broader urban network.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
public transport infrastructure
ⓘ
rapid transit line ⓘ |
| connects |
business districts in Nanjing
ⓘ
commercial areas in Nanjing ⓘ key urban districts in Nanjing ⓘ major transport hubs in Nanjing ⓘ residential areas in Nanjing ⓘ transport interchanges in Nanjing ⓘ |
| connectsWith | other Nanjing Metro lines at interchange stations ⓘ |
| country | China ⓘ |
| direction | east–west ⓘ |
| electrification | third rail ⓘ |
| fareSystem | Nanjing Metro unified fare system ⓘ |
| hasColor | line color used in Nanjing Metro maps ⓘ |
| hasRouteAlignment | east–west corridor across Nanjing ⓘ |
| hasStations | multiple stations across Nanjing ⓘ |
| locatedIn |
China
ⓘ
Jiangsu Province ⓘ
linked to:
Jiangsu
Nanjing ⓘ |
| mode | underground and elevated metro ⓘ |
| operator | Nanjing Metro Group ⓘ |
| owner | Nanjing Municipal Government ⓘ |
| partOf | Nanjing Metro ⓘ |
| primaryFunction | urban mass transit ⓘ |
| regionServed |
Nanjing metropolitan area
ⓘ
linked to:
Nanjing
|
| serves | urban districts of Nanjing ⓘ |
| servesRole | backbone east–west corridor in Nanjing Metro network ⓘ |
| serviceType | passenger transport ⓘ |
| system | Nanjing Metro ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | 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: Nanjing Metro Line 2 Description of subject: Nanjing Metro Line 2 is an east–west rapid transit line in Nanjing’s metro system that connects key urban districts and major transport hubs across the city.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Line 4
linked to: Nanjing Metro Line 2