Triple

T21365147
Position Surface form Disambiguated ID Type / Status
Subject MBTA Needham Line E526889 entity
Predicate predecessor P97 FINISHED
Object New York, New Haven and Hartford Railroad Needham Branch 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: New York, New Haven and Hartford Railroad Needham Branch | Statement: [MBTA Needham Line, predecessor, New York, New Haven and Hartford Railroad Needham Branch]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: New York, New Haven and Hartford Railroad Needham Branch
Context triple: [MBTA Needham Line, predecessor, New York, New Haven and Hartford Railroad Needham Branch]
  • A. New Haven–Northampton Railroad
    The New Haven–Northampton Railroad was a historic New England rail line that once connected New Haven, Connecticut to Northampton, Massachusetts and later became the corridor for today’s Farmington Canal Heritage Trail.
  • B. New Haven–Springfield Line
    The New Haven–Springfield Line is a key passenger rail corridor in the northeastern United States connecting New Haven, Connecticut, with Springfield, Massachusetts, and serving both intercity and commuter rail services.
  • C. Metro-North Railroad Waterbury Branch
    The Metro-North Railroad Waterbury Branch is a commuter rail line in Connecticut that provides service between Waterbury and the New Haven Line, connecting the Naugatuck Valley to the broader Metro-North network.
  • D. Metro-North Railroad New Canaan Branch
    The Metro-North Railroad New Canaan Branch is a commuter rail line in southwestern Connecticut that provides service between New Canaan and the New Haven Line main route into the New York City metropolitan area.
  • E. New Haven Line
    The New Haven Line is a major commuter rail route in the northeastern United States that connects New York City with New Haven, Connecticut, serving numerous communities along the Long Island Sound corridor.
  • 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: New York, New Haven and Hartford Railroad Needham Branch
Target entity description: The New York, New Haven and Hartford Railroad Needham Branch was a former suburban rail line in the Boston area that later formed the basis of today’s MBTA Needham Line.
  • A. New Haven–Northampton Railroad
    The New Haven–Northampton Railroad was a historic New England rail line that once connected New Haven, Connecticut to Northampton, Massachusetts and later became the corridor for today’s Farmington Canal Heritage Trail.
  • B. New Haven–Springfield Line
    The New Haven–Springfield Line is a key passenger rail corridor in the northeastern United States connecting New Haven, Connecticut, with Springfield, Massachusetts, and serving both intercity and commuter rail services.
  • C. Metro-North Railroad Waterbury Branch
    The Metro-North Railroad Waterbury Branch is a commuter rail line in Connecticut that provides service between Waterbury and the New Haven Line, connecting the Naugatuck Valley to the broader Metro-North network.
  • D. Metro-North Railroad New Canaan Branch
    The Metro-North Railroad New Canaan Branch is a commuter rail line in southwestern Connecticut that provides service between New Canaan and the New Haven Line main route into the New York City metropolitan area.
  • E. New Haven Line
    The New Haven Line is a major commuter rail route in the northeastern United States that connects New York City with New Haven, Connecticut, serving numerous communities along the Long Island Sound corridor.
  • 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_69e0b51d8a308190b09113b3b3f9bc15 completed April 16, 2026, 10:08 a.m.
NER Named-entity recognition batch_69e8b06e1ba081908a96928a65da5fa2 completed April 22, 2026, 11:26 a.m.
Created at: April 16, 2026, 5:09 p.m.