Triple

T21367131
Position Surface form Disambiguated ID Type / Status
Subject MBTA Mattapan Line E526945 entity
Predicate station P726 FINISHED
Object Butler
Butler is a light rail station on the MBTA's Mattapan trolley line in Boston, Massachusetts, serving the local residential neighborhood.
 E1479933 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 | Statement: [MBTA Mattapan Line, station, Butler]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Butler
Context triple: [MBTA Mattapan Line, station, Butler]
  • A. Butler
    Butler is the party that served as the defendant in the landmark U.S. Supreme Court case United States v. Butler, which addressed the constitutionality of certain New Deal agricultural policies.
  • B. Butler
    Butler is the highly skilled and fiercely loyal bodyguard and protector of child criminal mastermind Artemis Fowl in Eoin Colfer’s Artemis Fowl series.
  • C. Butler
    Butler is a city in Pennsylvania that serves as the administrative and economic center of Butler County.
  • D. Butler
    Butler is a common English and Irish surname historically associated with nobility and service roles, borne by numerous notable figures in politics, law, and the arts.
  • E. Butler
    Butler is a small city in Taylor County, Georgia, serving as the county seat and a local hub for the surrounding rural area.
  • 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
Triple: [MBTA Mattapan Line, station, Butler]
Generated description
Butler is a light rail station on the MBTA's Mattapan trolley line in Boston, Massachusetts, serving the local residential neighborhood.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Butler
Target entity description: Butler is a light rail station on the MBTA's Mattapan trolley line in Boston, Massachusetts, serving the local residential neighborhood.
  • A. Butler
    Butler is the party that served as the defendant in the landmark U.S. Supreme Court case United States v. Butler, which addressed the constitutionality of certain New Deal agricultural policies.
  • B. Butler
    Butler is a city in Pennsylvania that serves as the administrative and economic center of Butler County.
  • C. Butler
    Butler is a common English and Irish surname historically associated with nobility and service roles, borne by numerous notable figures in politics, law, and the arts.
  • D. Butler
    Butler is the highly skilled and fiercely loyal bodyguard and protector of child criminal mastermind Artemis Fowl in Eoin Colfer’s Artemis Fowl series.
  • E. Butler
    Butler is a small city in Taylor County, Georgia, serving as the county seat and a local hub for the surrounding rural area.
  • 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_69e0b51e80808190ba5cb05667af02a9 completed April 16, 2026, 10:08 a.m.
NER Named-entity recognition batch_69ee5bae5eb88190be6d9ff4dc03d52b completed April 26, 2026, 6:38 p.m.
NED1 Entity disambiguation (via context triple) batch_6a09ad6e67c88190b8152ce0bcd77f1c completed May 17, 2026, 11:58 a.m.
NEDg Description generation batch_6a09ae6c7ce481908021fecbc181bb93 completed May 17, 2026, 12:02 p.m.
NED2 Entity disambiguation (via description) batch_6a09aedbc2dc8190914e279d6425fa50 completed May 17, 2026, 12:04 p.m.
Created at: April 16, 2026, 5:09 p.m.