Line 2
E467934
Line 2 is a major circular line of the Seoul Metropolitan Subway system, known for being one of the busiest and most important routes in the network.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line 2 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4749913 — 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: Line 2 Context triple: [Seoul Metropolitan Subway, hasPart, Line 2]
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A.
Line 2
Line 2 is a circular rapid transit line of the Beijing Subway that runs around the city center, roughly following the path of the old city walls and the 2nd Ring Road.
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B.
Line 2
Line 2 is a planned rapid transit route of the Ho Chi Minh City Metro intended to connect key urban districts and relieve traffic congestion in Vietnam’s largest city.
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C.
Line 2
Line 2 is a trolleybus route within Geneva’s public transport system that serves as one of the city’s main electric bus lines.
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D.
Line 2
Line 2 is a rapid transit line of the Barcelona Metro system that serves several central and northern neighborhoods of the city.
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E.
Line 2
Line 2 is a planned second rapid transit line of the Turin Metro system in Turin, Italy, intended to expand the city's 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: Line 2 Target entity description: Line 2 is a major circular line of the Seoul Metropolitan Subway system, known for being one of the busiest and most important routes in the network.
-
A.
Line 2
Line 2 is a circular rapid transit line of the Beijing Subway that runs around the city center, roughly following the path of the old city walls and the 2nd Ring Road.
-
B.
Line 2
Line 2 is a circular line of the Brussels Metro system that serves central and surrounding districts of the Belgian capital.
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C.
Line 2
Line 2 is a major east–west rapid transit route in the Shenzhen Metro system, connecting key commercial and residential districts across the city.
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D.
Line 2
Line 2 is a major east–west rapid transit route of the Shanghai Metro that connects key commercial, residential, and airport hubs across the city.
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E.
Line 2
Line 2 is a major route of Mexico City’s Metrobús bus rapid transit system, running along key thoroughfares to connect important residential and commercial areas.
- F. None of above. chosen
Statements (58)
| Predicate | Object |
|---|---|
| instanceOf |
circle line
ⓘ
metro line ⓘ rapid transit line ⓘ |
| connectsDistrict |
Dongdaemun District
NERFINISHED
ⓘ
Gangnam District NERFINISHED ⓘ Guro District NERFINISHED ⓘ Jung District (Seoul) NERFINISHED ⓘ Mapo District NERFINISHED ⓘ Nowon District NERFINISHED ⓘ Seocho District NERFINISHED ⓘ Seongdong District NERFINISHED ⓘ Songpa District NERFINISHED ⓘ Yeongdeungpo District NERFINISHED ⓘ Yongsan District NERFINISHED ⓘ |
| electrification | 1500 V DC overhead catenary ⓘ |
| fareSystem | integrated metropolitan fare system ⓘ |
| hasAlternativeName |
Circle Line
NERFINISHED
ⓘ
Green Line NERFINISHED ⓘ |
| hasBranch |
Seongsu Branch Line
NERFINISHED
ⓘ
Sinjeong Branch Line NERFINISHED ⓘ |
| hasCharacter |
at-grade
ⓘ
elevated ⓘ underground ⓘ |
| hasFunction |
commuter transport
ⓘ
urban mass transit ⓘ |
| hasHangul | 2호선 NERFINISHED ⓘ |
| hasKoreanName | 서울 지하철 2호선 NERFINISHED ⓘ |
| hasLineColor | green ⓘ |
| hasLineNumber | 2 ⓘ |
| hasMajorStation |
City Hall Station
NERFINISHED
ⓘ
Euljiro 1-ga Station NERFINISHED ⓘ Euljiro 3-ga Station NERFINISHED ⓘ Euljiro 4-ga Station NERFINISHED ⓘ Gangnam Station NERFINISHED ⓘ Hongik University Station NERFINISHED ⓘ Jamsil Station NERFINISHED ⓘ Samseong Station NERFINISHED ⓘ Seolleung Station NERFINISHED ⓘ Seoul National University of Education Station NERFINISHED ⓘ Sindorim Station NERFINISHED ⓘ |
| hasRomanization | Seoul Jihacheol I-ho-seon NERFINISHED ⓘ |
| hasRouteType | circular main line with branch lines ⓘ |
| hasTrackGauge | standard gauge ⓘ |
| hasWritingSystem | Korean ⓘ |
| isBusiestLineIn | Seoul Metropolitan Subway NERFINISHED ⓘ |
| isKeyInterchangeBackboneOf | Seoul Metropolitan Subway network NERFINISHED ⓘ |
| locatedIn |
Seoul
NERFINISHED
ⓘ
South Korea NERFINISHED ⓘ |
| numberOfTracks | 2 ⓘ |
| openingDate | 1980 ⓘ |
| operator | Seoul Metro NERFINISHED ⓘ |
| owner | Seoul Metropolitan Government NERFINISHED ⓘ |
| partOf | Seoul Metropolitan Subway NERFINISHED ⓘ |
| safetySystem |
automatic train control
ⓘ
platform screen doors (on most stations) ⓘ |
| servesCity | Seoul NERFINISHED ⓘ |
| servesRegion | Seoul Capital Area NERFINISHED ⓘ |
| ticketMedium | contactless smart card (T-money) ⓘ |
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: Line 2 Description of subject: Line 2 is a major circular line of the Seoul Metropolitan Subway system, known for being one of the busiest and most important routes in the network.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.