Triple

T1424818
Position Surface form Disambiguated ID Type / Status
Subject MBTA Commuter Rail network E30305 entity
Predicate hasLine P35 FINISHED
Object Franklin/Foxboro Line
The Franklin/Foxboro Line is a Massachusetts Bay Transportation Authority commuter rail route serving Boston and its southwestern suburbs, including Franklin and Foxborough.
E217907 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: Franklin/Foxboro Line | Statement: [MBTA Commuter Rail network, hasLine, Franklin/Foxboro Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Franklin/Foxboro Line
Context triple: [MBTA Commuter Rail network, hasLine, Franklin/Foxboro Line]
  • A. Connecticut River Line
    The Connecticut River Line is a historic railroad corridor running along the Connecticut River in New England, long used for passenger and freight service connecting communities in Massachusetts, Vermont, and New Hampshire.
  • B. Mattapan Line
    The Mattapan Line is a light rail trolley service in Boston, Massachusetts, operating as part of the MBTA's Red Line system between Ashmont and Mattapan.
  • C. Chestnut Hill East Line
    Chestnut Hill East Line is a commuter rail service in the Philadelphia area operated as part of SEPTA’s Regional Rail network.
  • D. Fairfax Line
    The Fairfax Line was a colonial-era boundary line in what is now West Virginia and Virginia, originally surveyed to define the limits of the vast Northern Neck land grant.
  • E. MBTA Fitchburg Line
    The MBTA Fitchburg Line is a commuter rail route in the Greater Boston area that runs between Boston and Fitchburg, serving numerous suburban communities along the way.
  • 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: Franklin/Foxboro Line
Triple: [MBTA Commuter Rail network, hasLine, Franklin/Foxboro Line]
Generated description
The Franklin/Foxboro Line is a Massachusetts Bay Transportation Authority commuter rail route serving Boston and its southwestern suburbs, including Franklin and Foxborough.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Franklin/Foxboro Line
Target entity description: The Franklin/Foxboro Line is a Massachusetts Bay Transportation Authority commuter rail route serving Boston and its southwestern suburbs, including Franklin and Foxborough.
  • A. Connecticut River Line
    The Connecticut River Line is a historic railroad corridor running along the Connecticut River in New England, long used for passenger and freight service connecting communities in Massachusetts, Vermont, and New Hampshire.
  • B. Mattapan Line
    The Mattapan Line is a light rail trolley service in Boston, Massachusetts, operating as part of the MBTA's Red Line system between Ashmont and Mattapan.
  • C. Chestnut Hill East Line
    Chestnut Hill East Line is a commuter rail service in the Philadelphia area operated as part of SEPTA’s Regional Rail network.
  • D. Fairfax Line
    The Fairfax Line was a colonial-era boundary line in what is now West Virginia and Virginia, originally surveyed to define the limits of the vast Northern Neck land grant.
  • E. MBTA Fitchburg Line
    The MBTA Fitchburg Line is a commuter rail route in the Greater Boston area that runs between Boston and Fitchburg, serving numerous suburban communities along the way.
  • 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_69a498fb823c8190a67ce4c4837e641a completed March 1, 2026, 7:52 p.m.
NER Named-entity recognition batch_69a4c4bd59148190b96f9f585e07aa0d completed March 1, 2026, 10:59 p.m.
NED1 Entity disambiguation (via context triple) batch_69adfb8d636c8190a8a9ca29d8a6fd82 completed March 8, 2026, 10:43 p.m.
NEDg Description generation batch_69adfc9a4060819085d69a8642e49673 completed March 8, 2026, 10:47 p.m.
NED2 Entity disambiguation (via description) batch_69adfd03414c8190b1fc2b5608563726 completed March 8, 2026, 10:49 p.m.
Created at: March 1, 2026, 8 p.m.