Triple

T2687936
Position Surface form Disambiguated ID Type / Status
Subject Waban station E57528 entity
Predicate formerServiceType P16344 FINISHED
Object Boston and Albany Railroad commuter rail station
The Boston and Albany Railroad commuter rail station was a former suburban passenger rail stop that once served commuters traveling between Boston and its western suburbs along the historic Boston and Albany line.
E287578 NE FINISHED

How this triple was built (5 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: Boston and Albany Railroad commuter rail station | Statement: [Waban station, formerServiceType, Boston and Albany Railroad commuter rail station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Boston and Albany Railroad commuter rail station
Context triple: [Waban station, formerServiceType, Boston and Albany Railroad commuter rail station]
  • A. Fitchburg station
    Fitchburg station is a commuter rail stop in Fitchburg, Massachusetts, serving as a terminus on the MBTA Fitchburg Line connecting the city to the Greater Boston area.
  • B. Medford station
    Medford station is a Long Island Rail Road commuter rail stop located in Medford, New York, serving passengers on the Ronkonkoma Branch.
  • C. Framingham station
    Framingham station is a commuter rail station in Framingham, Massachusetts, serving MBTA and Amtrak trains on the Worcester Line west of Boston.
  • D. Malden Center station
    Malden Center station is a major transit hub in Malden, Massachusetts, serving both MBTA Orange Line subway and commuter rail services.
  • E. Belmont station
    Belmont station is a commuter rail stop in Downers Grove, Illinois, served by Metra’s BNSF Railway Line connecting the suburb to downtown Chicago.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Boston and Albany Railroad commuter rail station
Triple: [Waban station, formerServiceType, Boston and Albany Railroad commuter rail station]
Generated description
The Boston and Albany Railroad commuter rail station was a former suburban passenger rail stop that once served commuters traveling between Boston and its western suburbs along the historic Boston and Albany line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Boston and Albany Railroad commuter rail station
Target entity description: The Boston and Albany Railroad commuter rail station was a former suburban passenger rail stop that once served commuters traveling between Boston and its western suburbs along the historic Boston and Albany line.
  • A. Fitchburg station
    Fitchburg station is a commuter rail stop in Fitchburg, Massachusetts, serving as a terminus on the MBTA Fitchburg Line connecting the city to the Greater Boston area.
  • B. Medford station
    Medford station is a Long Island Rail Road commuter rail stop located in Medford, New York, serving passengers on the Ronkonkoma Branch.
  • C. Framingham station
    Framingham station is a commuter rail station in Framingham, Massachusetts, serving MBTA and Amtrak trains on the Worcester Line west of Boston.
  • D. Malden Center station
    Malden Center station is a major transit hub in Malden, Massachusetts, serving both MBTA Orange Line subway and commuter rail services.
  • E. Belmont station
    Belmont station is a commuter rail stop in Downers Grove, Illinois, served by Metra’s BNSF Railway Line connecting the suburb to downtown Chicago.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: formerServiceType
Context triple: [Waban station, formerServiceType, Boston and Albany Railroad commuter rail station]
  • A. formerType chosen
    Indicates that one entity previously had a certain type, role, or classification but no longer does.
  • B. formerName
    Indicates that an entity was previously known by a different name in the past.
  • C. hasFormerService
    Indicates that an entity previously provided a service to another entity but no longer does so.
  • D. formerFunction
    Indicates that an entity previously held a specific role, position, or function but no longer does so.
  • E. formerField
    Indicates that an entity previously had a particular field, role, or area of activity, but no longer does.
  • F. None of above.

Provenance (6 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_69ab4a5028388190a36f3baf1588309e completed March 6, 2026, 9:42 p.m.
NER Named-entity recognition batch_69abd9f1ba3081909a349a2f30f8f9c9 completed March 7, 2026, 7:55 a.m.
NED1 Entity disambiguation (via context triple) batch_69afa0741bc48190adffe6cfae831e26 completed March 10, 2026, 4:39 a.m.
NEDg Description generation batch_69afa13a81bc819091463e6589e72361 completed March 10, 2026, 4:42 a.m.
NED2 Entity disambiguation (via description) batch_69afa1ab8da8819090af3ed60b417040 completed March 10, 2026, 4:44 a.m.
PD Predicate disambiguation batch_69abd81c9b4c81908e5e0da6ac5f828b completed March 7, 2026, 7:47 a.m.
Created at: March 6, 2026, 9:54 p.m.