Triple

T20240446
Position Surface form Disambiguated ID Type / Status
Subject Silver Hill station E498272 entity
Predicate lineTerminusDirection P3384 FINISHED
Object Boston (east) via North Station — 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 (east) via North Station | Statement: [Silver Hill station, lineTerminusDirection, Boston (east) via North Station]

Disambiguation candidates (2 decisions)

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 (east) via North Station
Context triple: [Silver Hill station, lineTerminusDirection, Boston (east) via North Station]
  • A. Boston’s North Station (via Fitchburg Line)
    Boston’s North Station (via Fitchburg Line) is a major MBTA commuter rail terminal in Boston that serves as the downtown endpoint for the Fitchburg Line and several other northside rail routes.
  • B. Boston (via Lake Shore Limited)
    Boston (via Lake Shore Limited) is the eastern terminus city served by Amtrak’s Lake Shore Limited route that runs between Chicago and Boston.
  • C. Amtrak at South Station
    Amtrak at South Station is the intercity passenger rail service operating from Boston’s historic South Station, providing regional and long-distance train connections along the Northeast Corridor and beyond.
  • D. MBTA Commuter Rail at North Station
    MBTA Commuter Rail at North Station is a major Boston rail hub where regional trains connect downtown with numerous suburbs and outlying cities across Massachusetts.
  • E. Amtrak Downeaster (at North Station)
    The Amtrak Downeaster (at North Station) is an intercity passenger rail service that operates between Boston’s North Station and Brunswick, Maine, providing regional connections through New Hampshire and coastal Maine.
  • 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: Boston (east) via North Station
Target entity description: Boston (east) via North Station refers to the inbound commuter rail direction toward downtown Boston, terminating at North Station.
  • A. Boston’s North Station (via Fitchburg Line)
    Boston’s North Station (via Fitchburg Line) is a major MBTA commuter rail terminal in Boston that serves as the downtown endpoint for the Fitchburg Line and several other northside rail routes.
  • B. Boston (via Lake Shore Limited)
    Boston (via Lake Shore Limited) is the eastern terminus city served by Amtrak’s Lake Shore Limited route that runs between Chicago and Boston.
  • C. Amtrak at South Station
    Amtrak at South Station is the intercity passenger rail service operating from Boston’s historic South Station, providing regional and long-distance train connections along the Northeast Corridor and beyond.
  • D. MBTA Commuter Rail at North Station chosen
    MBTA Commuter Rail at North Station is a major Boston rail hub where regional trains connect downtown with numerous suburbs and outlying cities across Massachusetts.
  • E. Amtrak Downeaster (at North Station)
    The Amtrak Downeaster (at North Station) is an intercity passenger rail service that operates between Boston’s North Station and Brunswick, Maine, providing regional connections through New Hampshire and coastal Maine.
  • F. None of above.

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.