Triple

T7960468
Position Surface form Disambiguated ID Type / Status
Subject MBTA bus route 71 E184849 entity
Predicate fareSystem P395 FINISHED
Object MBTA fare system
The MBTA fare system is the payment and ticketing framework used across Boston’s public transit network, including buses, subways, commuter rail, and ferries, to collect and manage rider fares.
 E127628 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 fare system | Statement: [MBTA bus route 71, fareSystem, MBTA fare system]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: MBTA fare system
Context triple: [MBTA bus route 71, fareSystem, MBTA fare system]
  • A. 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.
  • B. 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.
  • C. 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.
  • D. MBTA fare gates
    MBTA fare gates are automated entry barriers used in Boston’s public transit system that validate tickets and passes before allowing passengers to access trains and stations.
  • E. MBTA CharlieTicket
    MBTA CharlieTicket is a reusable paper fare card used for paying subway, bus, and commuter rail fares on the Massachusetts Bay Transportation Authority system.
  • 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 fare system
Triple: [MBTA bus route 71, fareSystem, MBTA fare system]
Generated description
The MBTA fare system is the payment and ticketing framework used across Boston’s public transit network, including buses, subways, commuter rail, and ferries, to collect and manage rider fares.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: MBTA fare system
Target entity description: The MBTA fare system is the payment and ticketing framework used across Boston’s public transit network, including buses, subways, commuter rail, and ferries, to collect and manage rider fares.
  • A. MBTA AFC 2.0 chosen
    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.
  • B. 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.
  • C. 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.
  • D. MBTA fare gates
    MBTA fare gates are automated entry barriers used in Boston’s public transit system that validate tickets and passes before allowing passengers to access trains and stations.
  • E. MBTA CharlieTicket
    MBTA CharlieTicket is a reusable paper fare card used for paying subway, bus, and commuter rail fares on the Massachusetts Bay Transportation Authority system.
  • 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_69ca8293a2388190aace944d7ed9c0c0 completed March 30, 2026, 2:02 p.m.
NER Named-entity recognition batch_69cb3b8136448190890f007fb4fb7625 completed March 31, 2026, 3:12 a.m.
NED1 Entity disambiguation (via context triple) batch_69cbe084d9348190b4102fbdfedca297 completed March 31, 2026, 2:56 p.m.
NEDg Description generation batch_69cbe4888800819080eb11c9b7b7e28f completed March 31, 2026, 3:13 p.m.
NED2 Entity disambiguation (via description) batch_69cc1175c8a481909b29d3b850ad9084 completed March 31, 2026, 6:24 p.m.
Created at: March 30, 2026, 5:12 p.m.