Sealdah–Hasnabad railway line
E637833
The Sealdah–Hasnabad railway line is a suburban rail corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah with Hasnabad and serving numerous intermediate stations including Dum Dum.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Sealdah–Hasnabad line | 2 |
| Sealdah–Hasnabad railway line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7014995 — 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: Sealdah–Hasnabad railway line Context triple: [Dum Dum, servedBy, Sealdah–Hasnabad railway line]
-
A.
Sealdah–Bangaon railway line
The Sealdah–Bangaon railway line is a suburban rail corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah station with Bangaon and serving numerous intermediate urban and suburban localities.
-
B.
Sealdah–Ranaghat line
The Sealdah–Ranaghat line is a major suburban railway corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah station with Ranaghat and serving numerous densely populated towns along the route.
-
C.
Howrah–Bardhaman main line
The Howrah–Bardhaman main line is a major suburban and long-distance railway corridor in West Bengal, India, connecting Howrah (Kolkata) with Bardhaman and serving numerous important towns along the route.
-
D.
Howrah–New Jalpaiguri line
The Howrah–New Jalpaiguri line is a major railway route in the Indian state of West Bengal that connects Kolkata’s Howrah station with New Jalpaiguri, serving as a key corridor between southern and northern Bengal.
-
E.
Howrah–Delhi main line
The Howrah–Delhi main line is one of India's busiest and most important railway corridors, connecting Kolkata (Howrah) with the national capital New Delhi and passing through major cities across northern and eastern India.
- 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: Sealdah–Hasnabad railway line Target entity description: The Sealdah–Hasnabad railway line is a suburban rail corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah with Hasnabad and serving numerous intermediate stations including Dum Dum.
-
A.
Sealdah–Bangaon railway line
The Sealdah–Bangaon railway line is a suburban rail corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah station with Bangaon and serving numerous intermediate urban and suburban localities.
-
B.
Sealdah–Ranaghat line
The Sealdah–Ranaghat line is a major suburban railway corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah station with Ranaghat and serving numerous densely populated towns along the route.
-
C.
Howrah–Bardhaman main line
The Howrah–Bardhaman main line is a major suburban and long-distance railway corridor in West Bengal, India, connecting Howrah (Kolkata) with Bardhaman and serving numerous important towns along the route.
-
D.
Howrah–New Jalpaiguri line
The Howrah–New Jalpaiguri line is a major railway route in the Indian state of West Bengal that connects Kolkata’s Howrah station with New Jalpaiguri, serving as a key corridor between southern and northern Bengal.
-
E.
Howrah–Delhi main line
The Howrah–Delhi main line is one of India's busiest and most important railway corridors, connecting Kolkata (Howrah) with the national capital New Delhi and passing through major cities across northern and eastern India.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
railway line
ⓘ
suburban railway line ⓘ |
| cityCluster |
Kolkata metropolitan area
ⓘ
linked to:
Kolkata Metropolitan Area
|
| connectsCity |
Kolkata
ⓘ
linked to:
Calcutta
|
| country | India ⓘ |
| division | Sealdah railway division ⓘ |
| electrification | 25 kV AC overhead ⓘ |
| electrified | yes ⓘ |
| gauge | broad gauge ⓘ |
| hasIntermediateStation |
Barasat Junction
ⓘ
Bidhan Nagar Road ⓘ Biman Bandar (Kolkata Airport) (planned/associated branch) ⓘ |
| locatedIn |
India
ⓘ
West Bengal ⓘ |
| network | Kolkata suburban rail network ⓘ |
| operator | Eastern Railway zone ⓘ |
| owner | Indian Railways ⓘ |
| partOf | Kolkata Suburban Railway ⓘ |
| primaryRollingStock | Electric Multiple Unit ⓘ |
| regionServed | North 24 Parganas district ⓘ |
| servesStation | Dum Dum ⓘ |
| serviceType | suburban rail ⓘ |
| terminusStation |
Hasnabad
ⓘ
Sealdah ⓘ |
| usesSignalling | multiple-aspect colour light signalling ⓘ |
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: Sealdah–Hasnabad railway line Description of subject: The Sealdah–Hasnabad railway line is a suburban rail corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah with Hasnabad and serving numerous intermediate stations including Dum Dum.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Sealdah–Hasnabad railway line
linked to: Sealdah–Hasnabad railway line