Triple

T639114
Position Surface form Disambiguated ID Type / Status
Subject Mattapan Trolley E16691 entity
Predicate station P726 FINISHED
Object Butler station
Butler station is a small MBTA light rail stop on Boston’s historic Mattapan trolley line in the Dorchester/Mattapan area.
 E93489 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: Butler station | Statement: [Mattapan Trolley, station, Butler station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Butler station
Context triple: [Mattapan Trolley, station, Butler station]
  • A. Court House station
    Court House station is a Washington Metro rapid transit station serving the Courthouse neighborhood in Arlington, Virginia.
  • B. Cecil B. Moore station
    Cecil B. Moore station is a subway stop on Philadelphia’s Broad Street Line serving the Temple University area and surrounding North Philadelphia neighborhoods.
  • C. Richmond station
    Richmond station is a major Bay Area Rapid Transit (BART) and Amtrak intermodal rail hub located in Richmond, California.
  • D. Lawrence station
    Lawrence station is a Toronto Transit Commission subway station on Line 1 Yonge–University, serving the Lawrence Avenue and Yonge Street area in midtown Toronto.
  • E. Riverside station
    Riverside station is a major Massachusetts Bay Transportation Authority light rail station and park-and-ride hub located in Newton, Massachusetts.
  • 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: Butler station
Triple: [Mattapan Trolley, station, Butler station]
Generated description
Butler station is a small MBTA light rail stop on Boston’s historic Mattapan trolley line in the Dorchester/Mattapan area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Butler station
Target entity description: Butler station is a small MBTA light rail stop on Boston’s historic Mattapan trolley line in the Dorchester/Mattapan area.
  • A. Court House station
    Court House station is a Washington Metro rapid transit station serving the Courthouse neighborhood in Arlington, Virginia.
  • B. Cecil B. Moore station
    Cecil B. Moore station is a subway stop on Philadelphia’s Broad Street Line serving the Temple University area and surrounding North Philadelphia neighborhoods.
  • C. Richmond station
    Richmond station is a major Bay Area Rapid Transit (BART) and Amtrak intermodal rail hub located in Richmond, California.
  • D. Lawrence station
    Lawrence station is a Toronto Transit Commission subway station on Line 1 Yonge–University, serving the Lawrence Avenue and Yonge Street area in midtown Toronto.
  • E. Riverside station
    Riverside station is a major Massachusetts Bay Transportation Authority light rail station and park-and-ride hub located in Newton, Massachusetts.
  • 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_69a4936be1c88190af56540324b57da7 completed March 1, 2026, 7:28 p.m.
NER Named-entity recognition batch_69a49f00260081909d1a679182e23d10 completed March 1, 2026, 8:18 p.m.
NED1 Entity disambiguation (via context triple) batch_69a6787173e08190bef6734294b60c13 completed March 3, 2026, 5:58 a.m.
NEDg Description generation batch_69a678dea88081908da0e9cbea83eadd completed March 3, 2026, 5:59 a.m.
NED2 Entity disambiguation (via description) batch_69a6792c41608190867fb257ff8d5d35 completed March 3, 2026, 6:01 a.m.
Created at: March 1, 2026, 7:35 p.m.