Triple

T10310929
Position Surface form Disambiguated ID Type / Status
Subject Meriden station E241886 entity
Predicate servedByService P1294 FINISHED
Object Amtrak Vermonter (historically via corridor) E137381 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: Amtrak Vermonter (historically via corridor) | Statement: [Meriden station, servedByService, Amtrak Vermonter (historically via corridor)]

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: Amtrak Vermonter (historically via corridor)
Context triple: [Meriden station, servedByService, Amtrak Vermonter (historically via corridor)]
  • A. Amtrak Vermonter chosen
    Amtrak Vermonter is a daily intercity passenger train operated by Amtrak that runs between Washington, D.C., and St. Albans, Vermont, serving major cities along the Northeast Corridor and into northern New England.
  • B. Amtrak Ethan Allen Express
    The Amtrak Ethan Allen Express is an intercity passenger train service that operates between New York City and Vermont, providing a key rail connection through the Hudson Valley and upstate New York.
  • C. Amtrak Valley Flyer
    Amtrak Valley Flyer is a regional passenger rail service operated by Amtrak in New England, providing connections between western Massachusetts and central Connecticut as part of the broader Northeast rail network.
  • D. Amtrak Downeaster
    Amtrak Downeaster is a passenger rail service operated by Amtrak that connects Boston with several communities in Maine and New Hampshire.
  • E. Amtrak Keystone Service
    Amtrak Keystone Service is a passenger rail service operated by Amtrak that runs primarily between New York City and Harrisburg, Pennsylvania, providing frequent regional connections along the Keystone Corridor.
  • 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_69d381ac38808190a8ca7457c85b625b elicitation completed
NER batch_69d4d32ac6c08190b23eb042b3ec284a ner completed
NED1 batch_69d7502f7b308190aaefd62f2f8a0ac3 ned_source_triple completed
Created at: April 6, 2026, 11:47 a.m.