Triple

T1559992
Position Surface form Disambiguated ID Type / Status
Subject Littleton/Route 495 station E33296 entity
Predicate formerRailroad P30332 FINISHED
Object Fitchburg Railroad E18283 NE FINISHED

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: Fitchburg Railroad | Statement: [Littleton/Route 495 station, formerRailroad, Fitchburg Railroad]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Fitchburg Railroad
Context triple: [Littleton/Route 495 station, formerRailroad, Fitchburg Railroad]
  • A. Fitchburg Railroad chosen
    The Fitchburg Railroad was a historic New England rail line that operated across Massachusetts and into Vermont, later becoming part of the Boston and Maine Railroad system.
  • B. Boston and Lowell Railroad
    The Boston and Lowell Railroad was a 19th-century New England railway company that operated a key line between Boston and Lowell, Massachusetts, and later became part of larger regional rail systems.
  • C. Fitchburg Line
    The Fitchburg Line is a commuter rail service operated by the Massachusetts Bay Transportation Authority (MBTA) that runs between Boston and the city of Fitchburg in Massachusetts.
  • D. Eastern Railroad (of Massachusetts)
    Eastern Railroad (of Massachusetts) was a 19th-century New England railroad company that operated routes north of Boston and later became part of the Boston and Maine Railroad system.
  • E. Boston and Maine Railroad
    The Boston and Maine Railroad was a major New England railroad that operated extensive passenger and freight services across Massachusetts, New Hampshire, Maine, and surrounding states from the 19th through the mid-20th century.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: formerRailroad
Context triple: [Littleton/Route 495 station, formerRailroad, Fitchburg Railroad]
  • A. railroad
    Indicates that one entity constructs, operates, or provides railroad or train transportation services for another entity or area.
  • B. followsFormerRailroad
    Indicates that something is aligned with or traces the route of a former railroad line.
  • C. formerRailwayLine
    Indicates that a railway line previously existed in the past but is no longer in operation or has been decommissioned.
  • D. servedByRailroad
    Indicates that a location or facility is provided with transportation or service by a railroad line or company.
  • E. railroadClass
    Indicates the classification or category of a railroad according to an established system (e.g., by size, revenue, or regulatory status).
  • F. None of above. chosen

Provenance (5 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_69a885ef9cf48190b0af0f5ce3d02231 completed March 4, 2026, 7:20 p.m.
NER Named-entity recognition batch_69a9407d9d1481909597af97b16512cc completed March 5, 2026, 8:36 a.m.
NED1 Entity disambiguation (via context triple) batch_69ad4691cf5081909768f619b7a8a940 completed March 8, 2026, 9:51 a.m.
PD Predicate disambiguation batch_69a907b688d081908171f89010c53973 completed March 5, 2026, 4:33 a.m.
PDg Predicate description generation batch_69a9407aa20881909e747f247ccec642 completed March 5, 2026, 8:36 a.m.
Created at: March 4, 2026, 7:27 p.m.