Line 1
E660749
Line 1 is the first and one of the main rapid transit lines of the Nanjing Metro system in Nanjing, China, connecting key urban areas along a north–south corridor.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line 1 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7384713 — 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: [Nanjing Metro, hasLine, 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 one of the main east–west rapid transit lines of the Beijing Subway, serving as a core corridor through central Beijing.
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C.
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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D.
Line 1
Line 1 is a major rapid transit line of the Guangzhou Metro system in Guangzhou, China, serving as one of the city's primary east–west corridors.
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E.
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.
- 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 the first and one of the main rapid transit lines of the Nanjing Metro system in Nanjing, China, connecting key urban areas along a north–south corridor.
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A.
Line 1
Line 1 is the first and main rapid transit line of the Seville Metro system in Seville, Spain, connecting key districts across the metropolitan area.
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B.
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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C.
Line 1
Line 1 is a major rapid transit line of the Guangzhou Metro system in Guangzhou, China, serving as one of the city's primary east–west corridors.
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D.
Line 1
Line 1 is a major rapid transit line of the Shenzhen Metro system, serving as one of the city's primary east–west subway corridors.
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E.
Line 1
Line 1 is the first rapid transit line of the Santo Domingo Metro system, serving as a major north–south corridor through the Dominican Republic’s capital.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf | rapid transit line ⓘ |
| cityServed | Nanjing ⓘ |
| connects | key urban areas of Nanjing ⓘ |
| continent | Asia ⓘ |
| corridor | north–south corridor ⓘ |
| country | China ⓘ |
| direction | north–south ⓘ |
| electrification | overhead line ⓘ |
| hasColorDesignation | blue (commonly used in maps) ⓘ |
| hasRouteNumber | 1 ⓘ |
| infrastructureType | mass transit ⓘ |
| isMainLineOf | Nanjing Metro ⓘ |
| isPartOfNetwork | urban rail transit in Nanjing ⓘ |
| languageOfName | Chinese ⓘ |
| locatedIn |
China
ⓘ
Jiangsu ⓘ Nanjing ⓘ |
| namedAfter | its route number ⓘ |
| networkRole | backbone line of Nanjing Metro ⓘ |
| operator | Nanjing Metro Group ⓘ |
| partOf | Nanjing Metro ⓘ |
| primaryFunction | urban passenger transport ⓘ |
| publicTransportMode | metro ⓘ |
| serves | commuters in Nanjing ⓘ |
| serviceArea | urban Nanjing ⓘ |
| system | Nanjing Metro ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | heavy rail ⓘ |
| transportMode | 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 1 Description of subject: Line 1 is the first and one of the main rapid transit lines of the Nanjing Metro system in Nanjing, China, connecting key urban areas along a north–south corridor.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.