Line 9
E471137
Line 9 is a major rapid transit line in the Seoul Metropolitan Subway system known for its express services that significantly reduce travel time across key areas of the city.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line 9 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T4749920 — 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 9 Context triple: [Seoul Metropolitan Subway, hasPart, Line 9]
-
A.
Line 9
Line 9 is a rapid transit line of the Beijing Subway system that serves as part of the city's urban rail network.
-
B.
Line 9
Line 9 is a line of the Mexico City Metro system that serves as one of its key rapid transit routes across the city.
-
C.
Line 9
Line 9 is a rapid transit line of the Guangzhou Metro system serving parts of Guangzhou, China.
-
D.
Line 9
Line 9 is a major Barcelona Metro line designed as a long, partially automated route connecting key suburban and airport areas with the wider metropolitan network.
-
E.
Line 9
Line 9 is a rapid transit line of the Shenzhen Metro system in Shenzhen, China, serving several key districts in the city.
- 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 9 Target entity description: Line 9 is a major rapid transit line in the Seoul Metropolitan Subway system known for its express services that significantly reduce travel time across key areas of the city.
-
A.
Line 9
Line 9 is a rapid transit line of the Beijing Subway system that serves as part of the city's urban rail network.
-
B.
Line 9
Line 9 is a line of the Mexico City Metro system that serves as one of its key rapid transit routes across the city.
-
C.
Line 9
Line 9 is a rapid transit line of the Guangzhou Metro system serving parts of Guangzhou, China.
-
D.
Line 9
Line 9 is a major Barcelona Metro line designed as a long, partially automated route connecting key suburban and airport areas with the wider metropolitan network.
-
E.
Line 9
Line 9 is a rapid transit line of the Shenzhen Metro system in Shenzhen, China, serving several key districts in the city.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
rapid transit line
ⓘ
subway line ⓘ |
| connects |
eastern parts of the Seoul urban area
ⓘ
southern Seoul ⓘ western Seoul ⓘ |
| country | South Korea ⓘ |
| electrification | overhead line ⓘ |
| fareIntegrationWith |
Seoul city buses
ⓘ
airport buses ⓘ other Seoul Metropolitan Subway lines ⓘ |
| fareMedium |
Cash
ⓘ
Contactless cards ⓘ T‑money compatible ⓘ |
| fareSystem | integrated with Seoul Metropolitan Subway fare system ⓘ |
| hasCharacteristic |
east–west alignment
ⓘ
express service ⓘ local service ⓘ |
| hasFeature |
air‑conditioned rolling stock
ⓘ
automated train control ⓘ platform screen doors at most stations ⓘ |
| hasRole |
provides fast cross‑city connections
ⓘ
relieves congestion on parallel subway lines ⓘ |
| hasService |
high‑frequency urban rail service
ⓘ
off‑peak local operations ⓘ peak‑hour express operations ⓘ |
| isPartOfNetwork | capital region rail network of South Korea ⓘ |
| languageOfSignage |
Chinese
ⓘ
English ⓘ Japanese ⓘ Korean ⓘ |
| locatedIn |
Seoul
ⓘ
South Korea ⓘ |
| notableFor | significantly reduced travel time across key areas of Seoul ⓘ |
| operator |
Seoul Metro
ⓘ
Seoul Metro Line 9 Corporation ⓘ |
| owner | Seoul Metropolitan Government ⓘ |
| partOf | Seoul Metropolitan Subway ⓘ |
| primaryFunction |
commuter transport
ⓘ
urban mass transit ⓘ |
| safetyFeature |
CCTV surveillance in stations and trains
ⓘ
emergency communication devices in trains and stations ⓘ |
| safetySystem | automatic train protection ⓘ |
| servicePattern |
express trains skip selected stations
ⓘ
local trains stop at all stations ⓘ |
| system | Seoul Metropolitan Subway ⓘ |
| ticketingSystem | distance‑based fare ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | heavy rail ⓘ |
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 9 Description of subject: Line 9 is a major rapid transit line in the Seoul Metropolitan Subway system known for its express services that significantly reduce travel time across key areas of the city.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.