East–West corridor – Green Line
E635144
The East–West corridor – Green Line is a major Kolkata Metro route that runs east–west across the city, connecting key residential and commercial areas and including India’s first underwater metro tunnel beneath the Hooghly River.
All labels observed (2)
| Label | Occurrences |
|---|---|
| East–West corridor – Green Line canonical | 1 |
| east–west (Line 2–Green) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7015983 — 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: East–West corridor – Green Line Context triple: [Kolkata Metro, lineColor, East–West corridor – Green Line]
-
A.
The Green Line
The Green Line is a famous 1905 Fauvist portrait by Henri Matisse depicting his wife Amélie with a bold green stripe dividing her face, exemplifying his radical use of color and form.
-
B.
Northwest–East Line
The Northwest–East Line is the primary rapid transit route of Baltimore's Metro SubwayLink system, running across the city from the northwest suburbs toward the eastern side.
-
C.
Heritage Corridor line
The Heritage Corridor line is a Metra commuter rail service in the Chicago area that runs southwest from downtown Chicago to Joliet, primarily following the historic Illinois & Michigan Canal corridor.
-
D.
Red Line and Green Line
Red Line and Green Line are two key Boston MBTA subway lines that intersect at Park Street Station, serving as major routes through the city and surrounding areas.
-
E.
Green (as part of Green Line)
Green (as part of the Green Line) is the color designation used for Chicago's Green Line rapid transit route, including its Englewood Branch, within the Chicago 'L' system.
- 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: East–West corridor – Green Line Target entity description: The East–West corridor – Green Line is a major Kolkata Metro route that runs east–west across the city, connecting key residential and commercial areas and including India’s first underwater metro tunnel beneath the Hooghly River.
-
A.
The Green Line
The Green Line is a famous 1905 Fauvist portrait by Henri Matisse depicting his wife Amélie with a bold green stripe dividing her face, exemplifying his radical use of color and form.
-
B.
Northwest–East Line
The Northwest–East Line is the primary rapid transit route of Baltimore's Metro SubwayLink system, running across the city from the northwest suburbs toward the eastern side.
-
C.
Heritage Corridor line
The Heritage Corridor line is a Metra commuter rail service in the Chicago area that runs southwest from downtown Chicago to Joliet, primarily following the historic Illinois & Michigan Canal corridor.
-
D.
Red Line and Green Line
Red Line and Green Line are two key Boston MBTA subway lines that intersect at Park Street Station, serving as major routes through the city and surrounding areas.
-
E.
Green (as part of Green Line)
Green (as part of the Green Line) is the color designation used for Chicago's Green Line rapid transit route, including its Englewood Branch, within the Chicago 'L' system.
- F. None of above. chosen
Statements (24)
| Predicate | Object |
|---|---|
| instanceOf | metro line ⓘ |
| alsoKnownAs |
East–West Metro corridor
NERFINISHED
ⓘ
Green Line of Kolkata Metro NERFINISHED ⓘ |
| connects |
commercial areas of Kolkata
ⓘ
residential areas of Kolkata ⓘ |
| country | India ⓘ |
| crosses | Hooghly River NERFINISHED ⓘ |
| hasColor | green ⓘ |
| hasDirection | east–west ⓘ |
| hasDistinction | India’s first underwater metro tunnel ⓘ |
| hasFeature | underwater metro tunnel ⓘ |
| hasTunnelType | under-river tunnel ⓘ |
| infrastructureType | urban rail transit corridor ⓘ |
| isKeyComponentOf | Kolkata urban transport system ⓘ |
| isMajorRouteIn | Kolkata Metro network NERFINISHED ⓘ |
| locatedIn |
India
ⓘ
Calcutta ⓘ
surface form:
Kolkata
West Bengal ⓘ |
| partOf | Kolkata Metro NERFINISHED ⓘ |
| purpose | mass rapid transit for commuters in Kolkata ⓘ |
| regionServed | Kolkata metropolitan area NERFINISHED ⓘ |
| riverCrossedByTunnel | Hooghly River NERFINISHED ⓘ |
| runsAcross | Kolkata NERFINISHED ⓘ |
| transportMode | metro ⓘ |
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: East–West corridor – Green Line Description of subject: The East–West corridor – Green Line is a major Kolkata Metro route that runs east–west across the city, connecting key residential and commercial areas and including India’s first underwater metro tunnel beneath the Hooghly River.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
east–west (Line 2–Green)