Triple

T6323100
Position Surface form Disambiguated ID Type / Status
Subject MBTA paratransit service E141791 entity
Predicate governingBody P46 FINISHED
Object MBTA Board of Directors
The MBTA Board of Directors is the governing body that oversees policy, budgeting, and strategic decisions for Boston’s regional public transit system, including its paratransit services.
E2866 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: MBTA Board of Directors | Statement: [MBTA paratransit service, governingBody, MBTA Board of Directors]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: MBTA Board of Directors
Context triple: [MBTA paratransit service, governingBody, MBTA Board of Directors]
  • A. MBTA
    The MBTA (Massachusetts Bay Transportation Authority) is the public transit agency that operates subway, bus, commuter rail, and ferry services in the Greater Boston area.
  • B. MBTA
    MBTA is a landmark U.S. federal law enacted in 1918 that protects migratory bird species by prohibiting their unauthorized capture, killing, or trade.
  • C. MassDOT Rail and Transit Division
    The MassDOT Rail and Transit Division is the branch of Massachusetts’ state transportation agency responsible for planning, funding, and overseeing passenger rail and public transit services across the Commonwealth.
  • D. MBTA Commuter Rail network
    The MBTA Commuter Rail network is a regional passenger rail system serving Greater Boston and surrounding communities in Massachusetts and parts of Rhode Island.
  • E. MBTA AFC 2.0
    MBTA AFC 2.0 is the Massachusetts Bay Transportation Authority’s next-generation automated fare collection system designed to modernize how riders pay for and access public transit across Greater Boston.
  • 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: MBTA Board of Directors
Triple: [MBTA paratransit service, governingBody, MBTA Board of Directors]
Generated description
The MBTA Board of Directors is the governing body that oversees policy, budgeting, and strategic decisions for Boston’s regional public transit system, including its paratransit services.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: MBTA Board of Directors
Target entity description: The MBTA Board of Directors is the governing body that oversees policy, budgeting, and strategic decisions for Boston’s regional public transit system, including its paratransit services.
  • A. MBTA chosen
    The MBTA (Massachusetts Bay Transportation Authority) is the public transit agency that operates subway, bus, commuter rail, and ferry services in the Greater Boston area.
  • B. MBTA
    MBTA is a landmark U.S. federal law enacted in 1918 that protects migratory bird species by prohibiting their unauthorized capture, killing, or trade.
  • C. MassDOT Rail and Transit Division
    The MassDOT Rail and Transit Division is the branch of Massachusetts’ state transportation agency responsible for planning, funding, and overseeing passenger rail and public transit services across the Commonwealth.
  • D. MBTA Commuter Rail network
    The MBTA Commuter Rail network is a regional passenger rail system serving Greater Boston and surrounding communities in Massachusetts and parts of Rhode Island.
  • E. MBTA AFC 2.0
    MBTA AFC 2.0 is the Massachusetts Bay Transportation Authority’s next-generation automated fare collection system designed to modernize how riders pay for and access public transit across Greater Boston.
  • F. None of above.

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_69c008d201748190917e69c41ba3f978 completed March 22, 2026, 3:20 p.m.
NER Named-entity recognition batch_69c064e38f1c81909c7e90b520602bae completed March 22, 2026, 9:53 p.m.
NED1 Entity disambiguation (via context triple) batch_69c5e490472c8190b4ecc935bf03d01e completed March 27, 2026, 1:59 a.m.
NEDg Description generation batch_69c5e6347c108190bfdbad7c18880a37 completed March 27, 2026, 2:06 a.m.
NED2 Entity disambiguation (via description) batch_69c5e6bb552c8190a092495b5ecb5b57 completed March 27, 2026, 2:08 a.m.
Created at: March 22, 2026, 4:29 p.m.