Triple

T19522814
Position Surface form Disambiguated ID Type / Status
Subject Esplanade, Kolkata E488442 entity
Predicate servedBy P82 FINISHED
Object Kolkata tram network
The Kolkata tram network is India's only remaining operational tram system, providing historic electric streetcar services across parts of the city of Kolkata.
E1380333 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: Kolkata tram network | Statement: [Esplanade, Kolkata, servedBy, Kolkata tram network]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Kolkata tram network
Context triple: [Esplanade, Kolkata, servedBy, Kolkata tram network]
  • A. Kolkata Metro
    Kolkata Metro is India’s oldest rapid transit system, serving as a major urban rail network for the city of Kolkata and its surrounding areas.
  • B. Kolkata Suburban Railway (Howrah–Sealdah sections)
    The Kolkata Suburban Railway (Howrah–Sealdah sections) is a major suburban rail system serving the Kolkata metropolitan area, connecting its key terminals at Howrah and Sealdah with extensive surrounding suburbs.
  • C. Kolkata metropolitan transport region
    The Kolkata metropolitan transport region is the broader urban area around Kolkata, India, overseen by a unified transport authority that plans and regulates public transportation across multiple surrounding towns and suburbs.
  • D. Sealdah suburban corridor
    The Sealdah suburban corridor is a major suburban railway network in the Kolkata metropolitan area, serving dense commuter traffic across multiple lines radiating from Sealdah station.
  • E. Sealdah–Dankuni line
    The Sealdah–Dankuni line is a suburban railway corridor in the Kolkata metropolitan area that connects Sealdah with Dankuni, serving as a key commuter route in West Bengal, 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: Kolkata tram network
Triple: [Esplanade, Kolkata, servedBy, Kolkata tram network]
Generated description
The Kolkata tram network is India's only remaining operational tram system, providing historic electric streetcar services across parts of the city of Kolkata.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Kolkata tram network
Target entity description: The Kolkata tram network is India's only remaining operational tram system, providing historic electric streetcar services across parts of the city of Kolkata.
  • A. Kolkata Metro
    Kolkata Metro is India’s oldest rapid transit system, serving as a major urban rail network for the city of Kolkata and its surrounding areas.
  • B. Kolkata Suburban Railway (Howrah–Sealdah sections)
    The Kolkata Suburban Railway (Howrah–Sealdah sections) is a major suburban rail system serving the Kolkata metropolitan area, connecting its key terminals at Howrah and Sealdah with extensive surrounding suburbs.
  • C. Kolkata metropolitan transport region
    The Kolkata metropolitan transport region is the broader urban area around Kolkata, India, overseen by a unified transport authority that plans and regulates public transportation across multiple surrounding towns and suburbs.
  • D. Sealdah suburban corridor
    The Sealdah suburban corridor is a major suburban railway network in the Kolkata metropolitan area, serving dense commuter traffic across multiple lines radiating from Sealdah station.
  • E. Sealdah–Dankuni line
    The Sealdah–Dankuni line is a suburban railway corridor in the Kolkata metropolitan area that connects Sealdah with Dankuni, serving as a key commuter route in West Bengal, 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_69d8e8da8bec819081f400199491ccc3 completed April 10, 2026, 12:11 p.m.
NER Named-entity recognition batch_69e635a1ae9881908dfdcc94490c57aa completed April 20, 2026, 2:18 p.m.
NED1 Entity disambiguation (via context triple) batch_6a07472cadd88190a7306b8891141157 completed May 15, 2026, 4:17 p.m.
NEDg Description generation batch_6a07484fcb28819082922c817170d118 completed May 15, 2026, 4:22 p.m.
NED2 Entity disambiguation (via description) batch_6a07492259488190a8c405598f9c8878 completed May 15, 2026, 4:26 p.m.
Created at: April 10, 2026, 1:40 p.m.