Triple

T3469
Position Surface form Disambiguated ID Type / Status
Subject MBTA Fitchburg Line E65 entity
Predicate startPoint P389 FINISHED
Object North Station E2878 NE FINISHED

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: North Station | Statement: [MBTA Fitchburg Line, startPoint, North Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: North Station
Context triple: [MBTA Fitchburg Line, startPoint, North Station]
  • A. North Station chosen
    North Station is a major transportation hub in Boston, Massachusetts, serving as a key commuter rail, subway, and intercity bus terminal integrated with the TD Garden arena.
  • B. Penn Station (New York City)
    Penn Station (New York City) is a major underground railroad station and one of the busiest transportation hubs in the United States, serving Amtrak, commuter rail, and subway lines in Midtown Manhattan.
  • C. Belmont Center station
    Belmont Center station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop located in the commercial center of Belmont, Massachusetts.
  • D. Union Station
    Union Station is a historic Beaux-Arts transportation hub and major intercity rail terminal in Washington, D.C., serving as a gateway to the U.S. capital.
  • E. Princeton Station
    Princeton Station is a small commuter rail station in Princeton, New Jersey, serving as the terminus of the short "Dinky" shuttle line that connects the town and Princeton University to the Northeast Corridor.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
PD Predicate disambiguation gpt-5-mini-2025-08-07 
Target predicate: startPoint
Context triple: [MBTA Fitchburg Line, startPoint, North Station]
  • A. startDate
    Indicates the point in time when an event, state, or relationship begins.
  • B. focusesOn
    Indicates that one entity directs its attention, effort, or primary activity toward another entity or specific subject.
  • C. lowestPoint
    Indicates that one entity is the point with the minimum vertical position or value relative to another entity or within a specified context.
  • D. near
    Indicates that one entity is located at a short distance from another entity in space or position.
  • E. headquartersLocation
    Indicates the place where an organization’s main administrative center or principal office is located.
  • F. None of above. chosen

Provenance (5 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_69a238d6b47881909e68288aed2fd858 completed Feb. 28, 2026, 12:37 a.m.
NER Named-entity recognition batch_69a23bcc8eb48190b897cc331563980a completed Feb. 28, 2026, 12:50 a.m.
NED1 Entity disambiguation (via context triple) batch_69a26c120b98819087a09540c2a57366 completed Feb. 28, 2026, 4:16 a.m.
PD Predicate disambiguation batch_69a23994309081909ff3e869deef2156 completed Feb. 28, 2026, 12:40 a.m.
PDg Predicate description generation batch_69a23bcb4bbc819093775f623998d62d completed Feb. 28, 2026, 12:50 a.m.
Created at: Feb. 28, 2026, 12:40 a.m.