Triple

T38436
Position Surface form Disambiguated ID Type / Status
Subject MBTA Red Line E761 entity
Predicate branch P889 FINISHED
Object Ashmont branch
The Ashmont branch is a southern segment of Boston's MBTA Red Line rapid transit system that serves neighborhoods including Dorchester and terminates at Ashmont station.
 E19136 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: Ashmont branch | Statement: [MBTA Red Line, branch, Ashmont branch]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Ashmont branch
Context triple: [MBTA Red Line, branch, Ashmont branch]
  • A. Porter Square
    Porter Square is a bustling commercial and transit hub in northern Cambridge, Massachusetts, known for its shopping centers, restaurants, and MBTA Red Line and commuter rail station.
  • B. Belmont Public Library
    Belmont Public Library is the main public library serving the town of Belmont, Massachusetts, providing community access to books, media, and educational programs.
  • C. Inman Square
    Inman Square is a vibrant, historically working-class neighborhood and commercial district in Cambridge, Massachusetts, known for its diverse restaurants, bars, and local businesses.
  • D. Belmont Center station
    Belmont Center station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop located in the commercial center of Belmont, Massachusetts.
  • E. Fenway–Kenmore
    Fenway–Kenmore is a Boston neighborhood best known for housing Fenway Park and a mix of cultural institutions, universities, and residential areas.
  • 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: Ashmont branch
Triple: [MBTA Red Line, branch, Ashmont branch]
Generated description
The Ashmont branch is a southern segment of Boston's MBTA Red Line rapid transit system that serves neighborhoods including Dorchester and terminates at Ashmont station.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Ashmont branch
Target entity description: The Ashmont branch is a southern segment of Boston's MBTA Red Line rapid transit system that serves neighborhoods including Dorchester and terminates at Ashmont station.
  • A. Porter Square
    Porter Square is a bustling commercial and transit hub in northern Cambridge, Massachusetts, known for its shopping centers, restaurants, and MBTA Red Line and commuter rail station.
  • B. Belmont Public Library
    Belmont Public Library is the main public library serving the town of Belmont, Massachusetts, providing community access to books, media, and educational programs.
  • C. Inman Square
    Inman Square is a vibrant, historically working-class neighborhood and commercial district in Cambridge, Massachusetts, known for its diverse restaurants, bars, and local businesses.
  • D. Belmont Center station
    Belmont Center station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop located in the commercial center of Belmont, Massachusetts.
  • E. Fenway–Kenmore
    Fenway–Kenmore is a Boston neighborhood best known for housing Fenway Park and a mix of cultural institutions, universities, and residential areas.
  • 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_69a247a8f6c08190bac804906d62ed5a completed Feb. 28, 2026, 1:40 a.m.
NER Named-entity recognition batch_69a24acd14b48190b80d4329621583df completed Feb. 28, 2026, 1:54 a.m.
NED1 Entity disambiguation (via context triple) batch_69a2ce31b6108190a7c2f349db99f009 completed Feb. 28, 2026, 11:14 a.m.
NEDg Description generation batch_69a2cf2748e48190aa071063e74a0aa6 completed Feb. 28, 2026, 11:19 a.m.
NED2 Entity disambiguation (via description) batch_69a2cfd8ded081908ba70608ba80cebb completed Feb. 28, 2026, 11:22 a.m.
Created at: Feb. 28, 2026, 1:46 a.m.