Triple

T11313600
Position Surface form Disambiguated ID Type / Status
Subject MBTA Commuter Rail Providence/Stoughton Line E267904 entity
Predicate terminus P388 FINISHED
Object Stoughton Station
Stoughton Station is a Massachusetts Bay Transportation Authority commuter rail station in Stoughton, Massachusetts, serving as the endpoint for trains on the Providence/Stoughton Line.
 E917582 NE FINISHED

How this triple was built (4 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: Stoughton Station | Statement: [MBTA Commuter Rail Providence/Stoughton Line, terminus, Stoughton Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Stoughton Station
Context triple: [MBTA Commuter Rail Providence/Stoughton Line, terminus, Stoughton Station]
  • A. Westborough station
    Westborough station is a Massachusetts Bay Transportation Authority commuter rail stop in Westborough, Massachusetts, serving riders on the Framingham/Worcester Line between Worcester and Boston.
  • B. 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.
  • 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. Newtonville station
    Newtonville station is a commuter rail stop on the MBTA Framingham/Worcester Line serving the Newtonville neighborhood of Newton, Massachusetts.
  • E. Southborough station
    Southborough station is a Massachusetts Bay Transportation Authority commuter rail stop in Southborough, Massachusetts, serving riders on the Framingham/Worcester Line between Worcester and Boston.
  • 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: Stoughton Station
Triple: [MBTA Commuter Rail Providence/Stoughton Line, terminus, Stoughton Station]
Generated description
Stoughton Station is a Massachusetts Bay Transportation Authority commuter rail station in Stoughton, Massachusetts, serving as the endpoint for trains on the Providence/Stoughton Line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Stoughton Station
Target entity description: Stoughton Station is a Massachusetts Bay Transportation Authority commuter rail station in Stoughton, Massachusetts, serving as the endpoint for trains on the Providence/Stoughton Line.
  • A. Westborough station
    Westborough station is a Massachusetts Bay Transportation Authority commuter rail stop in Westborough, Massachusetts, serving riders on the Framingham/Worcester Line between Worcester and Boston.
  • B. 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.
  • 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. Newtonville station
    Newtonville station is a commuter rail stop on the MBTA Framingham/Worcester Line serving the Newtonville neighborhood of Newton, Massachusetts.
  • E. Southborough station
    Southborough station is a Massachusetts Bay Transportation Authority commuter rail stop in Southborough, Massachusetts, serving riders on the Framingham/Worcester Line between Worcester and Boston.
  • 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_69d6aaca5c24819083db46a30d86cb34 completed April 8, 2026, 7:21 p.m.
NER Named-entity recognition batch_69d7e9c1b7dc81908d8cc768c47390d3 completed April 9, 2026, 6:02 p.m.
NED1 Entity disambiguation (via context triple) batch_69e50a910a2c8190b8afd4c988e64141 completed April 19, 2026, 5:02 p.m.
NEDg Description generation batch_69e5167083fc8190b5cdbfca5b25b295 completed April 19, 2026, 5:52 p.m.
NED2 Entity disambiguation (via description) batch_69e51795f024819086bfe7deba485fdd completed April 19, 2026, 5:57 p.m.
Created at: April 8, 2026, 9:32 p.m.