Triple

T4178959
Position Surface form Disambiguated ID Type / Status
Subject MBTA diesel locomotives E86545 entity
Predicate usedOnLine P15252 FINISHED
Object Franklin/Foxboro Line E217907 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: Franklin/Foxboro Line | Statement: [MBTA diesel locomotives, usedOnLine, Franklin/Foxboro Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Franklin/Foxboro Line
Context triple: [MBTA diesel locomotives, usedOnLine, Franklin/Foxboro Line]
  • A. Franklin/Foxboro Line chosen
    The Franklin/Foxboro Line is a Massachusetts Bay Transportation Authority commuter rail route serving Boston and its southwestern suburbs, including Franklin and Foxborough.
  • B. Lowell Line
    The Lowell Line is a Massachusetts Bay Transportation Authority commuter rail route that runs between Boston’s North Station and the city of Lowell, serving communities in the Merrimack Valley.
  • C. Connecticut River Line
    The Connecticut River Line is a historic railroad corridor running along the Connecticut River in New England, long used for passenger and freight service connecting communities in Massachusetts, Vermont, and New Hampshire.
  • D. Middleborough/Lakeville Line
    The Middleborough/Lakeville Line is a Massachusetts Bay Transportation Authority commuter rail route serving Boston and southeastern Massachusetts communities including Middleborough and Lakeville.
  • E. Green Line West Branch
    The Green Line West Branch is a segment of Chicago's 'L' rapid transit system that carries Green Line trains between Harlem/Lake and Ashland/63rd on the city's West Side.
  • 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_69aed93de98c8190ad838ce507b77c8a completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69af030114c88190b725908a32ace750 completed March 9, 2026, 5:27 p.m.
NED1 Entity disambiguation (via context triple) batch_69bfaf26c0e481909f54973d30da3ef4 completed March 22, 2026, 8:58 a.m.
Created at: March 9, 2026, 3:45 p.m.