Triple

T5258489
Position Surface form Disambiguated ID Type / Status
Subject Portsmouth Direct Line E118760 entity
Predicate usesRollingStockType P1305 FINISHED
Object British Rail Class 450 E439056 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: British Rail Class 450 | Statement: [Portsmouth Direct Line, usesRollingStockType, British Rail Class 450]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: British Rail Class 450
Context triple: [Portsmouth Direct Line, usesRollingStockType, British Rail Class 450]
  • A. British Rail Class 450 chosen
    The British Rail Class 450 is a fleet of electric multiple unit commuter trains operated in southern England, particularly on suburban and regional services.
  • B. British Rail Class 375
    The British Rail Class 375 is a fleet of electric multiple-unit passenger trains operated by Southeastern on suburban and regional services in southeast England.
  • C. British Rail Class 395
    The British Rail Class 395 is a high-speed electric multiple unit train used in the UK, best known for operating Southeastern’s domestic services on High Speed 1 between London and Kent.
  • D. British Rail Class 802
    The British Rail Class 802 is a bi-mode high-speed intercity train used in the UK, derived from Hitachi’s A-train design and operated by several train companies on long-distance routes.
  • E. British Rail Class 158
    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.
  • 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_69bd446978108190bb5f9c5c23d93f88 completed March 20, 2026, 12:58 p.m.
NER Named-entity recognition batch_69bd7ba791c08190a18176feae8d1475 completed March 20, 2026, 4:53 p.m.
NED1 Entity disambiguation (via context triple) batch_69bf06c3945c8190874ecd184fa886a0 completed March 21, 2026, 8:59 p.m.
Created at: March 20, 2026, 1:50 p.m.