Triple

T13998378
Position Surface form Disambiguated ID Type / Status
Subject Beach railway station, Chennai E336759 entity
Predicate serves P98 FINISHED
Object Chennai Beach–Tambaram suburban corridor E1076145 NE FINISHED

How this triple was built (2 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: Chennai Beach–Tambaram suburban corridor | Statement: [Beach railway station, Chennai, serves, Chennai Beach–Tambaram suburban corridor]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Chennai Beach–Tambaram suburban corridor
Context triple: [Beach railway station, Chennai, serves, Chennai Beach–Tambaram suburban corridor]
  • A. Chennai Suburban Railway
    Chennai Suburban Railway is a major commuter rail network serving the greater Chennai metropolitan area, providing high-frequency train services that connect the city with its surrounding suburbs.
  • B. Chennai MRTS
    Chennai MRTS is an elevated suburban railway network in Chennai, India, providing rapid transit services along key urban corridors and connecting with other city transport systems.
  • C. Chennai–Bangalore line
    The Chennai–Bangalore line is a major Indian Railways trunk route connecting the cities of Chennai in Tamil Nadu and Bengaluru in Karnataka, serving numerous intermediate towns and suburban areas.
  • D. Chennai Metro
    Chennai Metro is a rapid transit system serving the Indian city of Chennai, providing urban rail connectivity across key residential, commercial, and industrial areas.
  • E. Chennai Central–Arakkonam line chosen
    The Chennai Central–Arakkonam line is a major suburban and intercity railway corridor in Tamil Nadu, India, connecting Chennai with the town of Arakkonam and forming part of the busy Chennai railway network.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 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_69d81c645c5c8190b1fd16a285a1b78a completed April 9, 2026, 9:38 p.m.
NER Named-entity recognition batch_69de2eb68ba88190bfaf10777d607bf3 completed April 14, 2026, 12:10 p.m.
NED1 Entity disambiguation (via context triple) batch_69fcd0934b74819094ec7309c23a3e2a completed May 7, 2026, 5:49 p.m.
Created at: April 9, 2026, 10:19 p.m.