Triple

T9816959
Position Surface form Disambiguated ID Type / Status
Subject Red Line Braintree Branch E238429 entity
Predicate connectsTo P845 FINISHED
Object MBTA Commuter Rail (via some stations) E30305 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 (via some stations) | Statement: [Red Line Braintree Branch, connectsTo, MBTA Commuter Rail (via some stations)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: MBTA Commuter Rail (via some stations)
Context triple: [Red Line Braintree Branch, connectsTo, MBTA Commuter Rail (via some stations)]
  • A. MBTA Commuter Rail network chosen
    The MBTA Commuter Rail network is a regional passenger rail system serving Greater Boston and surrounding communities in Massachusetts and parts of Rhode Island.
  • B. MBTA Commuter Rail passes
    MBTA Commuter Rail passes are time-based tickets that allow unlimited travel within specified fare zones on the Massachusetts Bay Transportation Authority’s commuter rail network.
  • C. MBTA Commuter Rail Old Colony Lines
    The MBTA Commuter Rail Old Colony Lines are a set of commuter rail routes in eastern Massachusetts that provide service between Boston and communities along the historic Old Colony Railroad corridors, including the South Shore and parts of southeastern Massachusetts.
  • D. MBTA commuter rail terminals
    MBTA commuter rail terminals are major passenger rail hubs in the Boston area that serve as endpoints and transfer points for regional trains connecting the city with its surrounding suburbs and communities.
  • E. MBTA Commuter Rail stations
    MBTA Commuter Rail stations are passenger rail stops in the Greater Boston area that provide regional train service connecting outlying communities with Boston and other destinations on the Massachusetts Bay Transportation Authority network.
  • 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_69ca84dfde1481909f47c286d715f892 completed March 30, 2026, 2:12 p.m.
NER Named-entity recognition batch_69cdb2f4a1548190a5afc5ee0d7da392 completed April 2, 2026, 12:06 a.m.
NED1 Entity disambiguation (via context triple) batch_69d1cc70d1188190820a49766699b94a completed April 5, 2026, 2:44 a.m.
Created at: March 30, 2026, 8:30 p.m.