Line 1
E467933
Line 1 is a major line of the Seoul Metropolitan Subway system, serving as one of its oldest and busiest commuter rail corridors across the Seoul metropolitan area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line 1 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4749912 — 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 1 Context triple: [Seoul Metropolitan Subway, hasPart, Line 1]
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A.
Line 1
Line 1 is the oldest and one of the busiest lines of the Santiago Metro, running primarily east–west across central Santiago, Chile.
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B.
Line 1
Line 1 is the oldest and one of the busiest lines of the Mexico City Metro, running east–west across the city and serving many central, high-traffic stations.
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C.
Line 1
Line 1 is a major north–south rapid transit line of the Shanghai Metro and one of the system’s oldest and busiest routes.
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D.
Line 1
Line 1 is one of the main lines of the Barcelona Metro rapid transit system, running on a largely east–west axis and serving several key districts of the city.
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E.
Line 1
Line 1 is the first operational corridor of the Mumbai Monorail system, serving as a key elevated transit route in Mumbai, India.
- 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 1 Target entity description: Line 1 is a major line of the Seoul Metropolitan Subway system, serving as one of its oldest and busiest commuter rail corridors across the Seoul metropolitan area.
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A.
Line 1
Line 1 is a major north–south rapid transit line of the Shanghai Metro and one of the system’s oldest and busiest routes.
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B.
Line 1
Line 1 is the oldest and one of the busiest lines of the Paris Métro, running primarily east–west through central Paris and serving many major landmarks.
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C.
Line 1
Line 1 is the main north–south route of the Tehran Metro system, serving as one of its busiest and most important rapid transit lines.
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D.
Line 1
Line 1 is a major Beijing Subway route that runs north–south through the city’s central axis, serving key commercial and historical areas.
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E.
Line 1
Line 1 is the oldest and one of the busiest lines of the Santiago Metro, running primarily east–west across central Santiago, Chile.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
metro line ⓘ railway line ⓘ |
| character |
at-grade
ⓘ
elevated ⓘ underground ⓘ |
| connectsWith |
AREX
NERFINISHED
ⓘ
Gyeongbu Line NERFINISHED ⓘ Gyeongin Line NERFINISHED ⓘ Gyeongui–Jungang Line NERFINISHED ⓘ Gyeongwon Line NERFINISHED ⓘ Janghang Line NERFINISHED ⓘ Line 2 (Seoul Metropolitan Subway) NERFINISHED ⓘ Line 3 (Seoul Metropolitan Subway) NERFINISHED ⓘ Line 4 (Seoul Metropolitan Subway) NERFINISHED ⓘ Line 5 (Seoul Metropolitan Subway) NERFINISHED ⓘ Line 6 (Seoul Metropolitan Subway) NERFINISHED ⓘ Line 7 (Seoul Metropolitan Subway) NERFINISHED ⓘ Line 8 (Seoul Metropolitan Subway) NERFINISHED ⓘ Line 9 (Seoul Metropolitan Subway) NERFINISHED ⓘ |
| country | South Korea ⓘ |
| electrification | 1500 V DC overhead line ⓘ |
| fareSystem | integrated metropolitan fare system ⓘ |
| hasColor | dark blue ⓘ |
| hasMajorStation |
Cheongnyangni Station
NERFINISHED
ⓘ
City Hall Station NERFINISHED ⓘ Jongno 3-ga Station NERFINISHED ⓘ Seoul Station NERFINISHED ⓘ Yongsan Station NERFINISHED ⓘ |
| hasTerminus |
Guro Station
NERFINISHED
ⓘ
Incheon Station NERFINISHED ⓘ Sinchang Station NERFINISHED ⓘ Soyosan Station NERFINISHED ⓘ |
| isBusiestLineOf | Seoul Metropolitan Subway NERFINISHED ⓘ |
| isOldestLineOf | Seoul Metropolitan Subway NERFINISHED ⓘ |
| isOneOfOldestLinesOf | Seoul Metropolitan Subway NERFINISHED ⓘ |
| lineNumber | 1 ⓘ |
| locatedIn | Seoul metropolitan area NERFINISHED ⓘ |
| opened | 1974-08-15 ⓘ |
| openingYear | 1974 ⓘ |
| operator |
Korail
NERFINISHED
ⓘ
Seoul Metro NERFINISHED ⓘ |
| partOf | Seoul Metropolitan Subway NERFINISHED ⓘ |
| primaryFunction | commuter transport ⓘ |
| serves |
Gyeonggi Province
NERFINISHED
ⓘ
Incheon NERFINISHED ⓘ Seoul NERFINISHED ⓘ |
| servesCorridor | north–south axis of Seoul metropolitan area ⓘ |
| systemLength | over 200 km ⓘ |
| type |
suburban rail
ⓘ
urban rail ⓘ |
| usesTrackGauge | standard gauge ⓘ |
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 1 Description of subject: Line 1 is a major line of the Seoul Metropolitan Subway system, serving as one of its oldest and busiest commuter rail corridors across the Seoul metropolitan area.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.