Changsha Metro
E170355
Changsha Metro is the rapid transit system serving Changsha, the capital of Hunan Province in China, providing urban rail transportation across the city and its suburbs.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Changsha Metro canonical | 16 |
| Changsha rail transit network | 2 |
| Changsha urban subway network | 2 |
| Changsha Metro Group Co., Ltd. | 1 |
| Changsha Metro Line 1 | 1 |
| Changsha urban rail transit network | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1498632 — 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: Changsha Metro Context triple: [Changsha, hasMetroSystem, Changsha Metro]
-
A.
Guangzhou Metro
Guangzhou Metro is the rapid transit system serving Guangzhou, China, forming one of the country’s largest and busiest urban rail networks.
-
B.
Wuhan Metro
Wuhan Metro is the rapid transit system serving the city of Wuhan, China, providing urban rail transportation across its major districts.
-
C.
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.
-
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.
Tianjin Metro
Tianjin Metro is the rapid transit system serving the city of Tianjin, China, providing urban and suburban rail transportation across the municipality.
- 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: Changsha Metro Target entity description: Changsha Metro is the rapid transit system serving Changsha, the capital of Hunan Province in China, providing urban rail transportation across the city and its suburbs.
-
A.
Guangzhou Metro
Guangzhou Metro is the rapid transit system serving Guangzhou, China, forming one of the country’s largest and busiest urban rail networks.
-
B.
Wuhan Metro
Wuhan Metro is the rapid transit system serving the city of Wuhan, China, providing urban rail transportation across its major districts.
-
C.
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.
-
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.
Tianjin Metro
Tianjin Metro is the rapid transit system serving the city of Tianjin, China, providing urban and suburban rail transportation across the municipality.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
metro line
ⓘ
metro line ⓘ metro system ⓘ rapid transit system ⓘ |
| connectsWith |
Changsha Maglev Express
ⓘ
Changsha city bus system ⓘ |
| country | China ⓘ |
| electrification | overhead line ⓘ |
| fareSystem | distance-based fare ⓘ |
| hasDepot |
Line 1 depot
ⓘ
Line 2 depot ⓘ |
| hasLine |
Changsha Maglev Express
ⓘ
Changsha Metro Line 1 ⓘ
linked to:
Changsha Metro
Changsha Metro Line 2 ⓘ Changsha Metro Line 3 ⓘ Changsha Metro Line 4 ⓘ Changsha Metro Line 5 ⓘ Changsha Metro Line 6 ⓘ |
| hasStation |
Changsha Railway Station
ⓘ
Changsha South Railway Station ⓘ |
| hasSystemLength | over 200 kilometers (planned and operational) ⓘ |
| hasWebsite | https://www.hncsmtr.com ⓘ |
| languageOfSignage |
Chinese
ⓘ
English ⓘ |
| locatedIn | Changsha ⓘ |
| locatedInAdministrativeTerritory | Hunan Province ⓘ |
| locatedInContinent | Asia ⓘ |
| numberOfLines | 6 (excluding maglev, operational or under construction as of mid-2020s) ⓘ |
| openingDate |
2014-04-29
ⓘ
2014-04-29 ⓘ 2016-06-28 ⓘ |
| operator |
Changsha Metro Group Co., Ltd.
ⓘ
linked to:
Changsha Metro
|
| owner |
Changsha Municipal Government
ⓘ
linked to:
Changsha
|
| partOf |
Changsha Metro
ⓘ
Changsha Metro ⓘ |
| primaryMode | heavy rail ⓘ |
| regionServed |
Changsha–Zhuzhou–Xiangtan city cluster (partially)
ⓘ
linked to:
Changsha–Zhuzhou–Xiangtan city cluster
|
| safetySystem |
automatic train operation
ⓘ
automatic train protection ⓘ |
| serves |
Changsha suburbs
ⓘ
Changsha urban area ⓘ
linked to:
Changsha
|
| ticketMedia |
QR code mobile payment
ⓘ
rechargeable smart card ⓘ |
| timeZone | China Standard Time ⓘ |
| trackGauge | standard gauge ⓘ |
| transportationType | urban rail transit ⓘ |
| usesTicketingTechnology |
contactless smart card
ⓘ
mobile payment platforms ⓘ |
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: Changsha Metro Description of subject: Changsha Metro is the rapid transit system serving Changsha, the capital of Hunan Province in China, providing urban rail transportation across the city and its suburbs.
Referenced by (23)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Changsha Metro
linked to: Changsha Metro
subject linked to:
Changsha Metro
subject linked to:
Changsha Metro
linked to: Changsha Metro
linked to: Changsha Metro
linked to: Changsha Metro
linked to: Changsha Metro
linked to: Changsha Metro