Triple

T20240474
Position Surface form Disambiguated ID Type / Status
Subject Hastings station E498273 entity
Predicate primaryCityServed P82 FINISHED
Object Boston (via MBTA Commuter Rail) — NE NERFINISHED

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: Boston (via MBTA Commuter Rail) | Statement: [Hastings station, primaryCityServed, Boston (via MBTA Commuter Rail)]

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: Boston (via MBTA Commuter Rail)
Context triple: [Hastings station, primaryCityServed, Boston (via MBTA Commuter Rail)]
  • A. MBTA Commuter Rail passes
    MBTA Commuter Rail passes are time-based tickets that allow unlimited travel within specified fare zones on the Massachusetts Bay Transportation Authority’s commuter rail network.
  • B. MBTA Commuter Rail (Old Colony Lines at JFK/UMass)
    MBTA Commuter Rail (Old Colony Lines at JFK/UMass) is a set of commuter rail services connecting Boston’s JFK/UMass station to southeastern Massachusetts communities along the restored Old Colony rail corridors.
  • C. MBTA commuter rail at Back Bay
    MBTA commuter rail at Back Bay is a major Boston rail station where regional commuter trains connect with subway services, including the Green Line’s E Branch.
  • D. MBTA Commuter Rail network chosen
    The MBTA Commuter Rail network is a regional passenger rail system serving Greater Boston and surrounding communities in Massachusetts and parts of Rhode Island.
  • E. MBTA Commuter Rail at Braintree
    MBTA Commuter Rail at Braintree is a regional rail station in Braintree, Massachusetts, serving as a key stop on the MBTA’s commuter rail network that links the South Shore suburbs with downtown Boston.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 batches)

Stage Batch ID Job type Status
creating batch_69da6274c58c81909c646eabed6f4f30 elicitation completed
NER batch_69e6716dd0b081909d4063150cdc0c02 ner completed
Created at: April 11, 2026, 11:40 p.m.