Triple

T16213103
Position Surface form Disambiguated ID Type / Status
Subject Canton, Massachusetts E393514 entity
Predicate railLine P848 FINISHED
Object MBTA Commuter Rail Providence/Stoughton Line E267904 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: MBTA Commuter Rail Providence/Stoughton Line | Statement: [Canton, Massachusetts, railLine, MBTA Commuter Rail Providence/Stoughton Line]

Disambiguation candidates (1 decision)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: MBTA Commuter Rail Providence/Stoughton Line
Context triple: [Canton, Massachusetts, railLine, MBTA Commuter Rail Providence/Stoughton Line]
  • A. MBTA Commuter Rail Providence/Stoughton Line chosen
    The MBTA Commuter Rail Providence/Stoughton Line is a regional rail service connecting Boston with Providence and Stoughton, providing key commuter and intercity transit through southeastern Massachusetts and northern Rhode Island.
  • B. MBTA Commuter Rail Greenbush Line
    The MBTA Commuter Rail Greenbush Line is a Massachusetts Bay Transportation Authority commuter rail route connecting Boston’s South Station with coastal South Shore communities, including towns such as Hingham, Cohasset, and Scituate.
  • C. MBTA Commuter Rail Kingston Line
    The MBTA Commuter Rail Kingston Line is a Massachusetts Bay Transportation Authority rail line providing commuter service between Boston and the South Shore, terminating in Kingston, Massachusetts.
  • D. MBTA Framingham/Worcester Line
    The MBTA Framingham/Worcester Line is a Massachusetts Bay Transportation Authority commuter rail route running between Boston and Worcester, serving numerous communities in the western suburbs.
  • E. MBTA Commuter Rail Franklin Line
    The MBTA Commuter Rail Franklin Line is a regional rail line in the Greater Boston area that provides passenger service between Boston and communities to the southwest, including Franklin.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69d87f1f5bd08190bd01cac0d5b9d2ef elicitation completed
NER batch_69e227f2c1288190bfaed49c364bfa22 ner completed
NED1 batch_6a0007932f088190b6c20913cfb932f4 ned_source_triple completed
Created at: April 10, 2026, 5:03 a.m.