Line 4
E661712
Line 4 is a rapid transit line of the Nanjing Metro system in Nanjing, China, serving as one of the city's main urban rail corridors.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line 4 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7384716 — 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 4 Context triple: [Nanjing Metro, hasLine, Line 4]
-
A.
Line 4
Line 4 is a route of Mexico City’s Metrobús bus rapid transit system that serves key corridors with dedicated lanes and high-capacity articulated buses.
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B.
Line 4
Line 4 is a major line of the Santiago Metro in Chile, serving key residential and commercial areas in the southeastern part of the city.
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C.
Line 4
Line 4 is a major north–south rapid transit route in the Beijing Subway system, serving key commercial, residential, and university areas of the city.
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D.
Line 4
Line 4 is a rapid transit line of the Guangzhou Metro system in Guangzhou, China, serving key urban and suburban areas along its north–south corridor.
-
E.
Line 4
Line 4 is one of the main lines of the Tehran Metro rapid transit system, serving key east–west corridors across Iran’s capital 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 4 Target entity description: Line 4 is a rapid transit line of the Nanjing Metro system in Nanjing, China, serving as one of the city's main urban rail corridors.
-
A.
Line 4
Line 4 is a rapid transit route of the STC Metro system, serving as one of its main urban rail lines.
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B.
Line 4
Line 4 is a rapid transit line of the Shenzhen Metro system in Shenzhen, China, serving as one of the city's major north–south corridors.
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C.
Line 4
Line 4 is a rapid transit line of the Guangzhou Metro system in Guangzhou, China, serving key urban and suburban areas along its north–south corridor.
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D.
Line 4
Line 4 is a circular rapid transit route of the Shanghai Metro system that loops around central districts and provides key transfer connections across the network.
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E.
Line 4
Line 4 is a route of Mexico City’s Metrobús bus rapid transit system that serves key corridors with dedicated lanes and high-capacity articulated buses.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf | rapid transit line ⓘ |
| connectsWith |
Line 1 (Nanjing Metro)
ⓘ
linked to:
Metro Line 1
Line 10 (Nanjing Metro) ⓘ
linked to:
Nanjing Metro Line 10
Line 2 (Nanjing Metro) ⓘ
linked to:
Nanjing Metro Line 2
Line 3 (Nanjing Metro) ⓘ S1 Line (Nanjing Metro) ⓘ
linked to:
Nanjing Metro Line S1
S3 Line (Nanjing Metro) ⓘ |
| country | China ⓘ |
| electrification | third rail ⓘ |
| fareCollection |
contactless smart card
ⓘ
single-journey ticket ⓘ |
| fareSystem | Nanjing Metro unified fare system ⓘ |
| hasColor | purple ⓘ |
| hasLanguageOfSignage |
Chinese
ⓘ
English ⓘ |
| hasRollingStock | Type B metro trains ⓘ |
| hasRouteNumber | 4 ⓘ |
| isPartOf |
Nanjing urban rail network
ⓘ
linked to:
Nanjing Metro
|
| locatedIn |
China
ⓘ
Jiangsu ⓘ Nanjing ⓘ |
| operator | Nanjing Metro Group ⓘ |
| owner | Nanjing Metro Group ⓘ |
| partOf | Nanjing Metro ⓘ |
| primaryFunction | mass transit for commuters ⓘ |
| serves |
Nanjing urban area
ⓘ
linked to:
Nanjing
|
| servesAs | urban rail corridor ⓘ |
| system | Nanjing Metro ⓘ |
| transportType | rapid transit ⓘ |
| uses | standard gauge track ⓘ |
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 4 Description of subject: Line 4 is a rapid transit line of the Nanjing Metro system in Nanjing, China, serving as one of the city's main urban rail corridors.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.