Chengdu Metro
E617940
Chengdu Metro is the rapid transit system serving Chengdu, China, providing urban rail transportation across the city and its metropolitan area.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Chengdu Metro canonical | 8 |
| Chengdu Metro lines | 2 |
| Chengdu Metro network | 2 |
| Chengdu Metro system | 1 |
| Chengdu urban rail network | 1 |
| Chengdu urban rail transit network | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6757912 — 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: Chengdu Metro Context triple: [Chengdu, hasPublicTransport, Chengdu Metro]
-
A.
Chengdu Metro Line 1
Chengdu Metro Line 1 is a major north–south rapid transit line in Chengdu, China, connecting key commercial and administrative areas across the city.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
Wuhan Metro
Wuhan Metro is the rapid transit system serving the city of Wuhan, China, providing urban rail transportation across its major districts.
- 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: Chengdu Metro Target entity description: Chengdu Metro is the rapid transit system serving Chengdu, China, providing urban rail transportation across the city and its metropolitan area.
-
A.
Chengdu Metro Line 1
Chengdu Metro Line 1 is a major north–south rapid transit line in Chengdu, China, connecting key commercial and administrative areas across the city.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
Wuhan Metro
Wuhan Metro is the rapid transit system serving the city of Wuhan, China, providing urban rail transportation across its major districts.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
metro system
ⓘ
public transport network ⓘ rapid transit system ⓘ |
| beganOperation | 2010-09-27 ⓘ |
| connectsWith |
Chengdu Shuangliu International Airport
ⓘ
Chengdu Tianfu International Airport ⓘ Chengdu Tram ⓘ Chengdu railway stations ⓘ |
| country | China ⓘ |
| electrification | overhead line ⓘ |
| fareCollection | automatic fare collection system ⓘ |
| fareSystem | distance-based fare ⓘ |
| firstLine |
Line 1 (Chengdu Metro)
ⓘ
linked to:
Chengdu Metro Line 1
|
| hasLine |
Line 1 (Chengdu Metro)
ⓘ
linked to:
Chengdu Metro Line 1
Line 10 (Chengdu Metro) ⓘ
linked to:
Chengdu Metro Line 10
Line 17 (Chengdu Metro) ⓘ Line 18 (Chengdu Metro) ⓘ Line 19 (Chengdu Metro) ⓘ Line 2 (Chengdu Metro) ⓘ
linked to:
Chengdu Metro Line 2
Line 3 (Chengdu Metro) ⓘ
linked to:
Chengdu Metro Line 3
Line 4 (Chengdu Metro) ⓘ
linked to:
Chengdu Metro Line 4
Line 5 (Chengdu Metro) ⓘ
linked to:
Chengdu Metro Line 5
Line 6 (Chengdu Metro) ⓘ Line 7 (Chengdu Metro) ⓘ
linked to:
Chengdu Metro Line 7
Line 8 (Chengdu Metro) ⓘ
linked to:
Chengdu Metro Line 8
Line 9 (Chengdu Metro) ⓘ
linked to:
Chengdu Metro Line 9
|
| languageOfSignage |
Chinese
ⓘ
English ⓘ |
| locatedIn |
People's Republic of China
ⓘ
linked to:
China
Sichuan Province ⓘ |
| notableStation |
Chengdu East railway station (metro)
ⓘ
linked to:
Chengdu East Railway Station
Chengdu North railway station (metro) ⓘ
linked to:
Chengdu North railway station
Chengdu South railway station (metro) ⓘ
linked to:
Chengdu South railway station
Tianfu Square station ⓘ |
| numberOfLines | multiple metro lines ⓘ |
| numberOfStations | over 300 stations (approximate) ⓘ |
| openingDateOfFirstLine | 2010-09-27 ⓘ |
| operator | Chengdu Metro Limited ⓘ |
| owner |
Chengdu Municipal Government
ⓘ
linked to:
Chengdu Municipal People’s Government
|
| primaryPropulsion | electric multiple units ⓘ |
| safetyFeature | platform screen doors on most stations ⓘ |
| serves | Chengdu ⓘ |
| servesArea |
Chengdu metropolitan area
ⓘ
linked to:
Chengdu
Chengdu urban core ⓘ |
| signallingSystem |
CBTC (communications-based train control)
ⓘ
linked to:
CBTC
|
| systemLength | over 500 km (approximate, network length) ⓘ |
| ticketMedia |
contactless smart card
ⓘ
single-journey token ⓘ |
| trackGauge | standard gauge ⓘ |
| transportationType | urban rail transit ⓘ |
| website | https://www.cdmetro.cn/ ⓘ |
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: Chengdu Metro Description of subject: Chengdu Metro is the rapid transit system serving Chengdu, China, providing urban rail transportation across the city and its metropolitan area.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Chéngdū
linked to: Chengdu Metro
linked to: Chengdu Metro
linked to: Chengdu Metro
linked to: Chengdu Metro
linked to: Chengdu Metro
linked to: Chengdu Metro
linked to: Chengdu Metro