Triple

T2874082
Position Surface form Disambiguated ID Type / Status
Subject Chestnut Hill station (MBTA Green Line D) E56833 entity
Predicate isOnCorridor P1018 FINISHED
Object Highland Branch (Green Line D)
Highland Branch (Green Line D) is a light rail branch of Boston's MBTA Green Line that runs through the western suburbs, including Newton and Brookline, providing rapid transit service between these communities and downtown Boston.
E305741 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: Highland Branch (Green Line D) | Statement: [Chestnut Hill station (MBTA Green Line D), isOnCorridor, Highland Branch (Green Line D)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Highland Branch (Green Line D)
Context triple: [Chestnut Hill station (MBTA Green Line D), isOnCorridor, Highland Branch (Green Line D)]
  • A. Gladstone Branch
    The Gladstone Branch is a commuter rail line in New Jersey that provides service between Gladstone and Hoboken/New York as part of NJ Transit's Morris & Essex Lines network.
  • B. Archer Avenue Line
    The Archer Avenue Line is a New York City Subway line in Queens that serves as a southeastern extension of the IND/BMT system, providing service to Jamaica Center and surrounding neighborhoods.
  • C. Dyre Avenue Line
    The Dyre Avenue Line is a New York City Subway line in the Bronx operated by the IRT division, primarily serving the 5 train along a former New York, Westchester and Boston Railway right-of-way.
  • D. Heritage Corridor line
    The Heritage Corridor line is a Metra commuter rail service in the Chicago area that runs southwest from downtown Chicago to Joliet, primarily following the historic Illinois & Michigan Canal corridor.
  • E. North Side Main Line
    The North Side Main Line was a historic elevated rapid transit route in Chicago that formed a key part of the early "L" system and later evolved into segments of today’s Red Line.
  • 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: Highland Branch (Green Line D)
Triple: [Chestnut Hill station (MBTA Green Line D), isOnCorridor, Highland Branch (Green Line D)]
Generated description
Highland Branch (Green Line D) is a light rail branch of Boston's MBTA Green Line that runs through the western suburbs, including Newton and Brookline, providing rapid transit service between these communities and downtown Boston.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Highland Branch (Green Line D)
Target entity description: Highland Branch (Green Line D) is a light rail branch of Boston's MBTA Green Line that runs through the western suburbs, including Newton and Brookline, providing rapid transit service between these communities and downtown Boston.
  • A. Gladstone Branch
    The Gladstone Branch is a commuter rail line in New Jersey that provides service between Gladstone and Hoboken/New York as part of NJ Transit's Morris & Essex Lines network.
  • B. Archer Avenue Line
    The Archer Avenue Line is a New York City Subway line in Queens that serves as a southeastern extension of the IND/BMT system, providing service to Jamaica Center and surrounding neighborhoods.
  • C. Dyre Avenue Line
    The Dyre Avenue Line is a New York City Subway line in the Bronx operated by the IRT division, primarily serving the 5 train along a former New York, Westchester and Boston Railway right-of-way.
  • D. Heritage Corridor line
    The Heritage Corridor line is a Metra commuter rail service in the Chicago area that runs southwest from downtown Chicago to Joliet, primarily following the historic Illinois & Michigan Canal corridor.
  • E. North Side Main Line
    The North Side Main Line was a historic elevated rapid transit route in Chicago that formed a key part of the early "L" system and later evolved into segments of today’s Red Line.
  • 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_69ab4a4ced288190ab6d3e062d10f7f6 completed March 6, 2026, 9:42 p.m.
NER Named-entity recognition batch_69abe0032ddc8190bb4d15ec7e3c63e8 completed March 7, 2026, 8:21 a.m.
NED1 Entity disambiguation (via context triple) batch_69b01db780908190919d859205464b2e completed March 10, 2026, 1:33 p.m.
NEDg Description generation batch_69b0201470cc81909188573c3749dffb completed March 10, 2026, 1:43 p.m.
NED2 Entity disambiguation (via description) batch_69b020aa00888190a683a621f1e1a107 completed March 10, 2026, 1:46 p.m.
Created at: March 6, 2026, 10:03 p.m.