Triple

T17394413
Position Surface form Disambiguated ID Type / Status
Subject Beacon Hill station E422912 entity
Predicate tunnel P12895 FINISHED
Object Beacon Hill tunnel — NE NERFINISHED

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: Beacon Hill tunnel | Statement: [Beacon Hill station, tunnel, Beacon Hill tunnel]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Beacon Hill tunnel
Context triple: [Beacon Hill station, tunnel, Beacon Hill tunnel]
  • A. Howard Street Tunnel
    The Howard Street Tunnel is a historic railroad tunnel in Baltimore, Maryland, that carries freight trains beneath the city’s downtown.
  • B. East Boston Tunnel
    The East Boston Tunnel is a historic underwater transit tunnel in Boston that originally carried streetcars and now forms part of the MBTA’s Blue Line subway connection between downtown Boston and East Boston.
  • C. 53rd Street Tunnel
    The 53rd Street Tunnel is a New York City Subway tunnel under the East River that carries IND Queens Boulevard Line trains between Manhattan and Queens.
  • D. Midtown Tunnel
    The Midtown Tunnel is a vehicular tunnel in the Hampton Roads region that carries traffic beneath the Elizabeth River between Norfolk and Portsmouth, Virginia.
  • E. Center City Tunnel
    Center City Tunnel is an underground rail corridor in downtown Philadelphia that links several major commuter rail lines to create a unified through-running system.
  • 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: Beacon Hill tunnel
Target entity description: Beacon Hill tunnel is an underground light rail tunnel in Seattle, Washington, carrying Sound Transit’s Link light rail beneath the Beacon Hill neighborhood.
  • A. Howard Street Tunnel
    The Howard Street Tunnel is a historic railroad tunnel in Baltimore, Maryland, that carries freight trains beneath the city’s downtown.
  • B. East Boston Tunnel
    The East Boston Tunnel is a historic underwater transit tunnel in Boston that originally carried streetcars and now forms part of the MBTA’s Blue Line subway connection between downtown Boston and East Boston.
  • C. 53rd Street Tunnel
    The 53rd Street Tunnel is a New York City Subway tunnel under the East River that carries IND Queens Boulevard Line trains between Manhattan and Queens.
  • D. Midtown Tunnel
    The Midtown Tunnel is a vehicular tunnel in the Hampton Roads region that carries traffic beneath the Elizabeth River between Norfolk and Portsmouth, Virginia.
  • E. Center City Tunnel
    Center City Tunnel is an underground rail corridor in downtown Philadelphia that links several major commuter rail lines to create a unified through-running system.
  • F. None of above. chosen

Provenance (2 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_69d889d710288190bf0f4762801fefae completed April 10, 2026, 5:25 a.m.
NER Named-entity recognition batch_69e43abbd84881908af91bb7c9784026 completed April 19, 2026, 2:15 a.m.
Created at: April 10, 2026, 5:45 a.m.