Xi'an Metro
E137860
Xi'an Metro is the rapid transit system serving the city of Xi'an, China, providing urban rail transportation across the metropolitan area.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Xi'an Metro canonical | 3 |
| Xi'an Metro lines | 1 |
| served by Xi'an public transport network | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1207254 — 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: Xi'an Metro Context triple: [Xi'an, hasTransport, Xi'an Metro]
-
A.
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.
-
B.
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.
-
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.
Shenzhen Metro
Shenzhen Metro is the rapid transit system serving the city of Shenzhen, China, known for its extensive, modern network and role in supporting the region’s fast-paced urban development.
-
E.
Guangzhou Metro
Guangzhou Metro is the rapid transit system serving Guangzhou, China, forming one of the country’s largest and busiest urban rail networks.
- 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: Xi'an Metro Target entity description: Xi'an Metro is the rapid transit system serving the city of Xi'an, China, providing urban rail transportation across the metropolitan area.
-
A.
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.
-
B.
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.
-
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.
Shenzhen Metro
Shenzhen Metro is the rapid transit system serving the city of Shenzhen, China, known for its extensive, modern network and role in supporting the region’s fast-paced urban development.
-
E.
Guangzhou Metro
Guangzhou Metro is the rapid transit system serving Guangzhou, China, forming one of the country’s largest and busiest urban rail networks.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
metro system
ⓘ
public transport system ⓘ rapid transit system ⓘ |
| alsoIncludes | elevated sections ⓘ |
| category |
Metro systems in China
ⓘ
Rail transport in Shaanxi ⓘ Transport in Xi'an ⓘ |
| connectsTo |
Xi'an North railway station
ⓘ
Xi'an railway stations ⓘ bus networks in Xi'an ⓘ |
| country | China ⓘ |
| electrification | electric railway ⓘ |
| environmentalImpact |
reduces road congestion
ⓘ
reduces urban air pollution ⓘ |
| fareSystem | distance-based fare ⓘ |
| hasFeature |
CCTV surveillance in stations and trains
ⓘ
air-conditioned rolling stock ⓘ automated fare collection ⓘ emergency evacuation procedures ⓘ multiple interchanges between lines ⓘ peak and off-peak service patterns ⓘ platform screen doors on many stations ⓘ real-time passenger information displays ⓘ security screening at station entrances ⓘ |
| languageOfSignage |
Chinese
ⓘ
English ⓘ |
| locatedIn |
China
ⓘ
Shaanxi ⓘ
linked to:
Shaanxi Province
Xi'an ⓘ
linked to:
X’ian, China
|
| numberOfLines | multiple metro lines ⓘ |
| numberOfStations | dozens of stations ⓘ |
| operator | Xi'an Rail Transit Group Co., Ltd. ⓘ |
| ownedBy |
municipal government of Xi'an
ⓘ
linked to:
X’ian, China
|
| primaryMode | underground ⓘ |
| purpose |
mass transit
ⓘ
urban rail transportation ⓘ |
| regionServed | Northwest China ⓘ |
| safetySystem | train control and signaling system ⓘ |
| serves |
Xi'an metropolitan area
ⓘ
linked to:
Guanzhong region
|
| servesFunction |
commuter transport
ⓘ
urban mobility ⓘ |
| systemLength | over 100 kilometers ⓘ |
| ticketMedia |
mobile payment
ⓘ
rechargeable smart cards ⓘ single-journey tickets ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | rapid transit ⓘ |
| uses | electric multiple units ⓘ |
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: Xi'an Metro Description of subject: Xi'an Metro is the rapid transit system serving the city of Xi'an, China, providing urban rail transportation across the metropolitan area.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.