Changsha Metro Line 2
E661721
Changsha Metro Line 2 is a major east–west rapid transit line in Changsha, China, connecting key urban districts and serving as one of the city's primary public transportation corridors.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Changsha Metro Line 2 canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T7384888 — 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 Line 2 Context triple: [Changsha Metro, hasLine, Changsha Metro Line 2]
-
A.
Changsha Metro Line 6
Changsha Metro Line 6 is a rapid transit line in Changsha, China, that provides urban rail service including a direct link to Changsha Huanghua International Airport.
-
B.
Changsha Metro
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.
-
C.
Guangzhou Metro Line 2
Guangzhou Metro Line 2 is a major north–south rapid transit line in Guangzhou, China, connecting key railway hubs, commercial districts, and residential areas across the city.
-
D.
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.
-
E.
Wuhan Metro Line 2
Wuhan Metro Line 2 is a major east–west rapid transit line in Wuhan, China, notable for being the city’s first cross-Yangtze River metro line and a key backbone of its urban rail 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: Changsha Metro Line 2 Target entity description: Changsha Metro Line 2 is a major east–west rapid transit line in Changsha, China, connecting key urban districts and serving as one of the city's primary public transportation corridors.
-
A.
Changsha Metro Line 6
Changsha Metro Line 6 is a rapid transit line in Changsha, China, that provides urban rail service including a direct link to Changsha Huanghua International Airport.
-
B.
Changsha Metro
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.
-
C.
Guangzhou Metro Line 2
Guangzhou Metro Line 2 is a major north–south rapid transit line in Guangzhou, China, connecting key railway hubs, commercial districts, and residential areas across the city.
-
D.
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.
-
E.
Wuhan Metro Line 2
Wuhan Metro Line 2 is a major east–west rapid transit line in Wuhan, China, notable for being the city’s first cross-Yangtze River metro line and a key backbone of its urban rail network.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf | rapid transit line ⓘ |
| connects |
eastern Changsha
ⓘ
key urban districts of Changsha ⓘ western Changsha ⓘ |
| connectsTo |
Changsha Metro Line 1
ⓘ
Changsha Metro Line 3 ⓘ Changsha Metro Line 4 ⓘ |
| country | China ⓘ |
| direction | east–west ⓘ |
| electrification | overhead line ⓘ |
| fareCollection |
contactless smart card
ⓘ
single-journey ticket ⓘ |
| fareSystem | Changsha Metro unified fare system ⓘ |
| hasColor | blue ⓘ |
| hasFunction | mass transit for commuters ⓘ |
| hasStationType |
elevated station
ⓘ
underground station ⓘ |
| languageOfSignage |
Chinese
ⓘ
English ⓘ |
| locatedIn |
Changsha
ⓘ
China ⓘ Hunan Province ⓘ |
| numberOfTracks | 2 ⓘ |
| operator |
Changsha Rail Transit Group
ⓘ
linked to:
Changsha Metro Group
|
| owner |
Changsha Rail Transit Group
ⓘ
linked to:
Changsha Metro Group
|
| partOf |
Changsha urban rail transit network
ⓘ
linked to:
Changsha Metro
|
| publicTransportMode | metro ⓘ |
| regionServed |
Changsha metropolitan area
ⓘ
linked to:
Changsha–Zhuzhou–Xiangtan city cluster
|
| role | primary public transportation corridor ⓘ |
| safetySystem |
automatic train protection
ⓘ
platform screen doors at most stations ⓘ |
| serves |
Furong District
ⓘ
Kaifu District ⓘ Tianxin District ⓘ Yuelu District ⓘ Yuhua District ⓘ |
| system | Changsha 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: Changsha Metro Line 2 Description of subject: Changsha Metro Line 2 is a major east–west rapid transit line in Changsha, China, connecting key urban districts and serving as one of the city's primary public transportation corridors.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.