Line 3
E829355
Line 3 is a major corridor of the Delhi Metro’s Blue Line, serving as one of the primary rapid transit routes across the city.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line 3 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9908797 — 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 3 Context triple: [Blue Line (Delhi Metro), lineNumber, Line 3]
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A.
Line 3
Line 3 is a rapid transit line of the Toronto subway system, commonly known as the Scarborough RT, that served the Scarborough district.
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B.
Line 3
Line 3 is a future rapid transit route of the Seville Metro intended to extend and improve the city’s urban rail network.
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C.
Line 3
Line 3 is a major line of the Sofia Metro rapid transit system in Sofia, Bulgaria, serving key residential and commercial areas of the city.
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D.
Line 3
Line 3 is a major north–south route of the Tehran Metro system, connecting key residential and commercial areas across the city.
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E.
Line 3
Line 3 is a major north–south rapid transit route of the Shanghai Metro system, known for its elevated tracks and extensive coverage across 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 3 Target entity description: Line 3 is a major corridor of the Delhi Metro’s Blue Line, serving as one of the primary rapid transit routes across the city.
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A.
Line 3
Line 3 is a major rapid transit route of the STC Metro system, serving key districts along its corridor.
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B.
Line 3
Line 3 is a major line of the Moscow Metro system, known for serving central Moscow and connecting key residential and commercial districts.
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C.
Line 3
Line 3 is a major north–south rapid transit route of the Shanghai Metro system, known for its elevated tracks and extensive coverage across the city.
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D.
Line 3
Line 3 is one of the main lines of the Barcelona Metro system, running through central parts of the city and connecting several key stations and neighborhoods.
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E.
Line 3
Line 3 is a major line of the Saint Petersburg Metro system, serving as one of the city's primary rapid transit routes.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf | metro line ⓘ |
| alsoKnownAs |
Blue Line Line 3
NERFINISHED
ⓘ
Dwarka–Noida City Centre corridor NERFINISHED ⓘ |
| character |
elevated
ⓘ
underground ⓘ |
| cityServed |
Delhi
NERFINISHED
ⓘ
Noida NERFINISHED ⓘ |
| connectsRegion |
Central Delhi
NERFINISHED
ⓘ
East Delhi NERFINISHED ⓘ Noida NERFINISHED ⓘ West Delhi NERFINISHED ⓘ |
| corridorOf | Blue Line (Delhi Metro) NERFINISHED ⓘ |
| country | India ⓘ |
| electrification | 25 kV AC overhead catenary ⓘ |
| fareSystem |
Delhi Metro smart card
ⓘ
Delhi Metro tokens ⓘ |
| hasInterchangeWith |
Airport Express Line (Delhi Metro)
NERFINISHED
ⓘ
Red Line (Delhi Metro) NERFINISHED ⓘ Violet Line (Delhi Metro) NERFINISHED ⓘ Yellow Line (Delhi Metro) NERFINISHED ⓘ |
| lineColor | blue ⓘ |
| mode | rail ⓘ |
| networkZone | National Capital Region NERFINISHED ⓘ |
| openingDecade | 2000s ⓘ |
| operator | Delhi Metro Rail Corporation NERFINISHED ⓘ |
| owner | Delhi Metro Rail Corporation NERFINISHED ⓘ |
| partOf | Delhi Metro NERFINISHED ⓘ |
| primaryFunction | urban mass transit ⓘ |
| region | Delhi metropolitan area NERFINISHED ⓘ |
| safetySystem |
automatic train operation
ⓘ
automatic train protection ⓘ |
| servesAs | major east–west corridor in Delhi Metro network ⓘ |
| servesPurpose |
providing high-capacity public transport across Delhi and Noida
ⓘ
reducing road traffic congestion in Delhi ⓘ |
| system | Delhi Metro Rail Corporation NERFINISHED ⓘ |
| terminusStation |
Dwarka Sector 21 metro station
NERFINISHED
ⓘ
Noida City Centre metro station NERFINISHED ⓘ |
| ticketing |
QR code ticket (phased introduction)
ⓘ
contactless smart card ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | rapid transit ⓘ |
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 3 Description of subject: Line 3 is a major corridor of the Delhi Metro’s Blue Line, serving as one of the primary rapid transit routes across the city.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Blue Line (Delhi Metro)