Triple

T7500716
Position Surface form Disambiguated ID Type / Status
Subject MBTA Commuter Rail (Old Colony Lines at JFK/UMass) E177251 entity
Predicate primaryTerminalInBoston P29923 FINISHED
Object South Station E18279 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: South Station | Statement: [MBTA Commuter Rail (Old Colony Lines at JFK/UMass), primaryTerminalInBoston, South Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: South Station
Context triple: [MBTA Commuter Rail (Old Colony Lines at JFK/UMass), primaryTerminalInBoston, South Station]
  • A. South Station chosen
    South Station is Boston’s major intercity rail and bus terminal and a key MBTA subway hub in the city’s downtown.
  • B. North Station
    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.
  • C. MBTA North Station
    MBTA North Station is a major Boston transportation hub that serves as a key terminal for MBTA subway and commuter rail lines as well as Amtrak services.
  • D. Medford station
    Medford station is a Long Island Rail Road commuter rail stop located in Medford, New York, serving passengers on the Ronkonkoma Branch.
  • E. Lowell station
    Lowell station is a passenger rail station in Lowell, Massachusetts that serves as the northern terminus of the MBTA Commuter Rail’s Lowell Line.
  • 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: primaryTerminalInBoston
Context triple: [MBTA Commuter Rail (Old Colony Lines at JFK/UMass), primaryTerminalInBoston, South Station]
  • A. primaryTerminalFor chosen
    Indicates that one entity serves as the main or principal terminal associated with another entity.
  • B. primaryLondonTerminal
    Indicates that a given station serves as the main London terminal for a particular rail service or route.
  • C. otherMajorTerminal
    Indicates that an entity is associated with a different primary terminal or endpoint than the one currently referenced or considered.
  • D. westTerminalStation
    Indicates that a station serves as the western terminal (end point) of a route, line, or service.
  • E. airportServesAs
    Indicates that an airport functions in a particular role or capacity (such as primary, secondary, or hub) for a specified area, organization, or service.
  • F. None of above.

Provenance (4 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_69c69f2696688190915a8458f2398211 completed March 27, 2026, 3:15 p.m.
NER Named-entity recognition batch_69c6f81b431481908214b69c6c8d83bc completed March 27, 2026, 9:35 p.m.
NED1 Entity disambiguation (via context triple) batch_69c8682f438c8190bca55f7773fe6838 completed March 28, 2026, 11:45 p.m.
PD Predicate disambiguation batch_69c6f4d266d88190982cf5d2ee2e9564 completed March 27, 2026, 9:21 p.m.
Created at: March 27, 2026, 3:44 p.m.