Triple

T3404410
Position Surface form Disambiguated ID Type / Status
Subject MBTA Braintree Branch E71735 entity
Predicate sharesTrunkSegmentWith P41108 FINISHED
Object MBTA Ashmont Branch E71486 NE FINISHED

How this triple was built (3 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: MBTA Ashmont Branch | Statement: [MBTA Braintree Branch, sharesTrunkSegmentWith, MBTA Ashmont Branch]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: MBTA Ashmont Branch
Context triple: [MBTA Braintree Branch, sharesTrunkSegmentWith, MBTA Ashmont Branch]
  • A. MBTA Ashmont Branch chosen
    The MBTA Ashmont Branch is a rapid transit line of Boston’s Red Line that runs from JFK/UMass station through Dorchester to Ashmont, serving several southern neighborhoods of the city.
  • B. MBTA Fairmount Line
    The MBTA Fairmount Line is a commuter rail service in Boston, Massachusetts, connecting several neighborhoods in the city’s southern corridor to downtown.
  • C. MBTA Green Line B branch
    The MBTA Green Line B branch is a light rail service in Boston that runs along Commonwealth Avenue, primarily serving Boston University and the Allston–Brighton neighborhoods.
  • D. MBTA Green Line C branch
    The MBTA Green Line C branch is a light rail service in Boston and Brookline that runs primarily along Beacon Street, connecting Cleveland Circle to downtown Boston.
  • E. MBTA Green Line E branch
    The MBTA Green Line E branch is a light rail line in Boston that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street, serving major hospitals, universities, and residential neighborhoods.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
PD Predicate disambiguation gpt-5-mini-2025-08-07 
Target predicate: sharesTrunkSegmentWith
Context triple: [MBTA Braintree Branch, sharesTrunkSegmentWith, MBTA Ashmont Branch]
  • A. sharesTrunkWith
    Indicates that two entities have a common trunk or main stem from which they both extend or branch.
  • B. sharesTrunkLineWith
    Indicates that two entities are connected to or use the same primary communication or utility trunk line.
  • C. sharesCorridorWith
    Indicates that two entities are located along or connected by the same corridor or passageway.
  • D. sharesSectionsWith chosen
    Indicates that two entities have one or more sections or segments in common.
  • E. sharesElementsWith
    Indicates that two entities have one or more elements or components in common.
  • F. None of above.

Provenance (4 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_69ad85aac4808190a092c9cc8911f584 completed March 8, 2026, 2:20 p.m.
NER Named-entity recognition batch_69adb8e8ea848190b4ac167f1aba8ebd completed March 8, 2026, 5:59 p.m.
NED1 Entity disambiguation (via context triple) batch_69bf28e228608190a531da6024803e1b completed March 21, 2026, 11:25 p.m.
PD Predicate disambiguation batch_69adadfa73ac8190a163f93e88d217f8 completed March 8, 2026, 5:12 p.m.
Created at: March 8, 2026, 3:14 p.m.