Triple

T11517257
Position Surface form Disambiguated ID Type / Status
Subject West Roxbury E273060 entity
Predicate servedBy P82 FINISHED
Object MBTA Commuter Rail Needham Line E257407 NE FINISHED

How this triple was built (2 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 Commuter Rail Needham Line | Statement: [West Roxbury, servedBy, MBTA Commuter Rail Needham Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: MBTA Commuter Rail Needham Line
Context triple: [West Roxbury, servedBy, MBTA Commuter Rail Needham Line]
  • A. MBTA Commuter Rail Needham Line chosen
    The MBTA Commuter Rail Needham Line is a regional rail service in Greater Boston that connects downtown Boston with the suburb of Needham and intermediate communities.
  • B. MBTA Needham Line
    The MBTA Needham Line is a commuter rail route in the Greater Boston area that connects Boston’s South Station with the suburb of Needham, serving intermediate communities along the way.
  • C. MBTA Commuter Rail Greenbush Line
    The MBTA Commuter Rail Greenbush Line is a Massachusetts Bay Transportation Authority commuter rail route connecting Boston’s South Station with coastal South Shore communities, including towns such as Hingham, Cohasset, and Scituate.
  • D. MBTA Commuter Rail Franklin Line
    The MBTA Commuter Rail Franklin Line is a regional rail line in the Greater Boston area that provides passenger service between Boston and communities to the southwest, including Franklin.
  • E. MBTA Lowell Line
    The MBTA Lowell Line is a commuter rail service operated by the Massachusetts Bay Transportation Authority that runs between Boston’s North Station and Lowell, serving several communities in northern Massachusetts.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 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_69d6aae2c3748190bed2ea50dfb160dc completed April 8, 2026, 7:22 p.m.
NER Named-entity recognition batch_69d87fcc72a48190b81acedfcc8685d3 completed April 10, 2026, 4:42 a.m.
NED1 Entity disambiguation (via context triple) batch_69e62530a6b08190a8ba3c410e79cf72 completed April 20, 2026, 1:08 p.m.
Created at: April 8, 2026, 9:36 p.m.