Nanjing Metro
E170351
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.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Nanjing Metro canonical | 2 |
| Nanjing Metro Group Co., Ltd. | 1 |
| Nanjing Metro Line 1 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1498547 — 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 Context triple: [Nanjing, hasMetroSystem, Nanjing Metro]
-
A.
Hefei Metro
Hefei Metro is the rapid transit system serving Hefei, the capital city of China’s Anhui Province, providing urban rail transportation across the metropolitan area.
-
B.
Shanghai Metro
Shanghai Metro is one of the world’s largest and busiest rapid transit systems, serving the city of Shanghai with an extensive network of urban and suburban rail lines.
-
C.
Wuhan Metro
Wuhan Metro is the rapid transit system serving the city of Wuhan, China, providing urban rail transportation across its major districts.
-
D.
Tianjin Metro
Tianjin Metro is the rapid transit system serving the city of Tianjin, China, providing urban and suburban rail transportation across the municipality.
-
E.
Beijing Subway
The Beijing Subway is one of the world’s largest and busiest rapid transit systems, forming the backbone of public transportation in China’s capital 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: Nanjing Metro Target entity description: 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.
-
A.
Hefei Metro
Hefei Metro is the rapid transit system serving Hefei, the capital city of China’s Anhui Province, providing urban rail transportation across the metropolitan area.
-
B.
Shanghai Metro
Shanghai Metro is one of the world’s largest and busiest rapid transit systems, serving the city of Shanghai with an extensive network of urban and suburban rail lines.
-
C.
Wuhan Metro
Wuhan Metro is the rapid transit system serving the city of Wuhan, China, providing urban rail transportation across its major districts.
-
D.
Tianjin Metro
Tianjin Metro is the rapid transit system serving the city of Tianjin, China, providing urban and suburban rail transportation across the municipality.
-
E.
Beijing Subway
The Beijing Subway is one of the world’s largest and busiest rapid transit systems, forming the backbone of public transportation in China’s capital city.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
metro system
ⓘ
rapid transit system ⓘ |
| connectsTo |
Nanjing Lukou International Airport
ⓘ
Nanjing Railway Station ⓘ Nanjing South Railway Station ⓘ |
| country | China ⓘ |
| electrification | overhead line ⓘ |
| environmentalImpact | reduces road traffic congestion in Nanjing ⓘ |
| fareSystem | distance-based fare ⓘ |
| gauge | standard gauge ⓘ |
| hasDepot | Nanjing Metro depots and yards ⓘ |
| hasFeature |
air-conditioned trains
ⓘ
automatic fare collection ⓘ bilingual signage in Chinese and English ⓘ platform screen doors on most stations ⓘ |
| hasFunction |
mass passenger transport
ⓘ
urban mobility corridor ⓘ |
| hasLine |
Line 1
ⓘ
Line 10 ⓘ Line 2 ⓘ Line 3 ⓘ Line 4 ⓘ S1 Line ⓘ S3 Line ⓘ S4 Line ⓘ S6 Line ⓘ S7 Line ⓘ S8 Line ⓘ S9 Line ⓘ |
| hasMap | Nanjing Metro network map ⓘ |
| locatedIn |
Jiangsu
ⓘ
surface form:
Jiangsu Province
Nanjing ⓘ China ⓘ
surface form:
People's Republic of China
|
| operator |
Nanjing Metro
self-linksurface differs
ⓘ
surface form:
Nanjing Metro Group Co., Ltd.
|
| ownedBy |
Nanjing Municipal Government
ⓘ
surface form:
Nanjing municipal government
|
| partOf | public transport in Nanjing ⓘ |
| planningStatus | network under expansion ⓘ |
| primaryLanguage | Chinese ⓘ |
| safetySystem |
automatic train control
ⓘ
automatic train protection ⓘ |
| serves |
Nanjing suburban areas
ⓘ
Nanjing ⓘ
surface form:
Nanjing urban area
|
| ticketing |
contactless smart card
ⓘ
single-journey token ⓘ |
| transitType |
rapid transit
ⓘ
subway ⓘ urban rail transit ⓘ |
| usesRollingStock | electric multiple units ⓘ |
| website | official Nanjing Metro website ⓘ |
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 Description of subject: 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.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Nanjing Metro Group Co., Ltd.
this entity surface form:
Nanjing Metro Line 1