Triple

T17773729
Position Surface form Disambiguated ID Type / Status
Subject Eastleigh–Romsey line E443706 entity
Predicate rollingStockUsed P5426 FINISHED
Object British Rail Class 158 — NE NERFINISHED

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: British Rail Class 158 | Statement: [Eastleigh–Romsey line, rollingStockUsed, British Rail Class 158]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: British Rail Class 158
Context triple: [Eastleigh–Romsey line, rollingStockUsed, British Rail Class 158]
  • A. British Rail Class 158 chosen
    The British Rail Class 158 is a diesel multiple-unit train built in the late 1980s and early 1990s for regional and intercity services across the UK rail network.
  • B. British Rail Class 159
    The British Rail Class 159 is a diesel multiple-unit train used for long-distance regional services in the UK, particularly known for operating intercity-style routes in the southwest of England.
  • C. British Rail Class 155
    The British Rail Class 155 is a type of diesel multiple unit passenger train built in the late 1980s for regional services on the UK rail network.
  • D. British Rail Class 150
    The British Rail Class 150 is a diesel multiple-unit passenger train built in the 1980s for regional and commuter services on the UK rail network.
  • E. British Rail Class 156
    The British Rail Class 156 is a diesel multiple-unit passenger train built in the late 1980s for regional and local services across the UK rail network.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

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_69d8b9ef17708190bdf7e2adbf14ddc2 completed April 10, 2026, 8:50 a.m.
NER Named-entity recognition batch_69e4871af4248190aed2b3bd42433771 completed April 19, 2026, 7:41 a.m.
Created at: April 10, 2026, 10:12 a.m.