Triple

T1002188
Position Surface form Disambiguated ID Type / Status
Subject Lowell, Massachusetts E21627 entity
Predicate servedByRail P522 FINISHED
Object MBTA Commuter Rail Lowell Line E82302 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 Lowell Line | Statement: [Lowell, Massachusetts, servedByRail, MBTA Commuter Rail Lowell Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: MBTA Commuter Rail Lowell Line
Context triple: [Lowell, Massachusetts, servedByRail, MBTA Commuter Rail Lowell Line]
  • A. MBTA Commuter Rail Lowell Line chosen
    The MBTA Commuter Rail Lowell Line is a regional rail service in Greater Boston that connects Boston’s North Station with the city of Lowell and intermediate communities in northeastern Massachusetts.
  • B. 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.
  • 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 Middleborough/Lakeville Line
    The MBTA Commuter Rail Middleborough/Lakeville Line is a Massachusetts Bay Transportation Authority rail service connecting Boston’s South Station with southeastern Massachusetts communities including Middleborough and Lakeville.
  • E. MBTA Commuter Rail Kingston Line
    The MBTA Commuter Rail Kingston Line is a Massachusetts Bay Transportation Authority rail line providing commuter service between Boston and the South Shore, terminating in Kingston, 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_69a493c53e648190ae8cb76c433fd9a7 completed March 1, 2026, 7:30 p.m.
NER Named-entity recognition batch_69a4b4fcbc04819098d2125518f62ae7 completed March 1, 2026, 9:51 p.m.
NED1 Entity disambiguation (via context triple) batch_69ac2a1cb4f08190b1351aadd57c3bda completed March 7, 2026, 1:37 p.m.
Created at: March 1, 2026, 7:41 p.m.