Triple

T23516622
Position Surface form Disambiguated ID Type / Status
Subject Production units of Indian Railways E574385 entity
Predicate hasPart P35 FINISHED
Object Chittaranjan Locomotive Works — NE NERFINISHED

How this triple was built (3 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: Chittaranjan Locomotive Works | Statement: [Production units of Indian Railways, hasPart, Chittaranjan Locomotive Works]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Chittaranjan Locomotive Works
Context triple: [Production units of Indian Railways, hasPart, Chittaranjan Locomotive Works]
  • A. Tata Engineering and Locomotive Company
    Tata Engineering and Locomotive Company was the original name of Tata Motors, a major Indian automotive manufacturer known for producing commercial and passenger vehicles.
  • B. Kanchrapara Railway Workshop
    Kanchrapara Railway Workshop is a major Indian Railways maintenance and repair facility located in Kanchrapara, West Bengal, known for overhauling locomotives, coaches, and other rolling stock.
  • C. Jagadhri railway workshop
    Jagadhri railway workshop is a major Indian Railways facility in Haryana dedicated to the maintenance and repair of railway rolling stock and related infrastructure.
  • D. Bhilai marshalling yard
    Bhilai marshalling yard is a major railway freight yard in Bhilai, Chhattisgarh, serving as a key hub for organizing and handling heavy industrial and goods traffic on the Indian Railways network.
  • E. Kanpur electric loco shed
    Kanpur electric loco shed is a major Indian Railways facility in Kanpur responsible for housing, maintaining, and servicing electric locomotives operating in the region.
  • 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: Chittaranjan Locomotive Works
Target entity description: Chittaranjan Locomotive Works is a major Indian Railways manufacturing facility renowned for producing electric locomotives.
  • A. Tata Engineering and Locomotive Company
    Tata Engineering and Locomotive Company was the original name of Tata Motors, a major Indian automotive manufacturer known for producing commercial and passenger vehicles.
  • B. Kanchrapara Railway Workshop
    Kanchrapara Railway Workshop is a major Indian Railways maintenance and repair facility located in Kanchrapara, West Bengal, known for overhauling locomotives, coaches, and other rolling stock.
  • C. Jagadhri railway workshop
    Jagadhri railway workshop is a major Indian Railways facility in Haryana dedicated to the maintenance and repair of railway rolling stock and related infrastructure.
  • D. Bhilai marshalling yard
    Bhilai marshalling yard is a major railway freight yard in Bhilai, Chhattisgarh, serving as a key hub for organizing and handling heavy industrial and goods traffic on the Indian Railways network.
  • E. Kanpur electric loco shed
    Kanpur electric loco shed is a major Indian Railways facility in Kanpur responsible for housing, maintaining, and servicing electric locomotives operating in the region.
  • F. None of above. chosen

Provenance (2 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_69e245bb3dcc8190ba9a2b35972b58d0 completed April 17, 2026, 2:37 p.m.
NER Named-entity recognition batch_69f1aa82a8448190bf7ad56137c5eb94 completed April 29, 2026, 6:51 a.m.
Created at: April 17, 2026, 6:08 p.m.