Triple

T7014995
Position Surface form Disambiguated ID Type / Status
Subject Dum Dum E162678 entity
Predicate servedBy P82 FINISHED
Object Sealdah–Hasnabad railway line
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.
E637833 NE FINISHED

How this triple was built (4 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Sealdah–Hasnabad railway line | Statement: [Dum Dum, servedBy, Sealdah–Hasnabad railway line]
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.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Sealdah–Hasnabad railway line
Triple: [Dum Dum, servedBy, Sealdah–Hasnabad railway line]
Generated 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.
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

Provenance (5 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69c6885a127c8190867b059bdccf13ff completed March 27, 2026, 1:38 p.m.
NER Named-entity recognition batch_69c6e1d31edc8190931655616d0739d1 completed March 27, 2026, 8 p.m.
NED1 Entity disambiguation (via context triple) batch_69c7884ac340819093e1812738d5e30f completed March 28, 2026, 7:50 a.m.
NEDg Description generation batch_69c788da40bc8190b16be996834d1488 completed March 28, 2026, 7:52 a.m.
NED2 Entity disambiguation (via description) batch_69c7895252e88190b105c3630926dc60 completed March 28, 2026, 7:54 a.m.
Created at: March 27, 2026, 2:34 p.m.