Triple

T7015982
Position Surface form Disambiguated ID Type / Status
Subject Kolkata Metro E162700 entity
Predicate lineColor P60 FINISHED
Object North–South corridor – Blue Line
The North–South corridor – Blue Line is the principal and oldest line of the Kolkata Metro, running along the city’s north–south axis and serving as a major urban transit backbone.
 E635143 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: North–South corridor – Blue Line | Statement: [Kolkata Metro, lineColor, North–South corridor – Blue Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: North–South corridor – Blue Line
Context triple: [Kolkata Metro, lineColor, North–South corridor – Blue Line]
  • A. 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.
  • B. Blue Line
    The Blue Line is one of the Montreal Metro’s rapid transit lines, running east–west to serve several central and northeastern neighborhoods of the city.
  • C. Blue Line
    The Blue Line is a major rapid transit route in Chicago that runs between O'Hare International Airport and the city's western suburbs via downtown.
  • D. Blue Line
    The Blue Line is one of the main lines of the Lisbon Metro system, serving key central and northern areas of Portugal’s capital city.
  • E. Blue Line
    The Blue Line is one of the primary routes of the MetroLink light rail system serving the St. Louis metropolitan area.
  • 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: North–South corridor – Blue Line
Triple: [Kolkata Metro, lineColor, North–South corridor – Blue Line]
Generated description
The North–South corridor – Blue Line is the principal and oldest line of the Kolkata Metro, running along the city’s north–south axis and serving as a major urban transit backbone.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: North–South corridor – Blue Line
Target entity description: The North–South corridor – Blue Line is the principal and oldest line of the Kolkata Metro, running along the city’s north–south axis and serving as a major urban transit backbone.
  • A. 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.
  • B. Blue Line
    The Blue Line is one of the Montreal Metro’s rapid transit lines, running east–west to serve several central and northeastern neighborhoods of the city.
  • C. Blue Line
    The Blue Line is a major rapid transit route in Chicago that runs between O'Hare International Airport and the city's western suburbs via downtown.
  • D. Blue Line
    The Blue Line is one of the main lines of the Lisbon Metro system, serving key central and northern areas of Portugal’s capital city.
  • E. Blue Line
    The Blue Line is one of the primary routes of the MetroLink light rail system serving the St. Louis metropolitan area.
  • 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_69c6e1d43e948190843f1cef3ce2004e completed March 27, 2026, 8 p.m.
NED1 Entity disambiguation (via context triple) batch_69c76a5655d48190a2df556f63add35d completed March 28, 2026, 5:42 a.m.
NEDg Description generation batch_69c76b9702d4819099f873b37fad309b completed March 28, 2026, 5:48 a.m.
NED2 Entity disambiguation (via description) batch_69c76c10303c8190a08f1728da6ebcd2 completed March 28, 2026, 5:50 a.m.
Created at: March 27, 2026, 2:34 p.m.