Triple

T15213280
Position Surface form Disambiguated ID Type / Status
Subject Kingston station E363570 entity
Predicate ticketSystem P25925 FINISHED
Object MBTA Commuter Rail fare system
The MBTA Commuter Rail fare system is the structured zone-based pricing and ticketing framework used to determine and collect passenger fares across Massachusetts Bay Transportation Authority commuter rail lines.
E1143626 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 Commuter Rail fare system | Statement: [Kingston station, ticketSystem, MBTA Commuter Rail fare system]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: MBTA Commuter Rail fare system
Context triple: [Kingston station, ticketSystem, MBTA Commuter Rail fare system]
  • A. 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.
  • B. 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.
  • C. 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.
  • D. MBTA Mattapan High-Speed Line
    The MBTA Mattapan High-Speed Line is a light rail trolley service in the Boston area that operates historic PCC streetcars between Ashmont Station in Dorchester and Mattapan, serving communities including Milton, Massachusetts.
  • E. 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.
  • 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 Commuter Rail fare system
Triple: [Kingston station, ticketSystem, MBTA Commuter Rail fare system]
Generated description
The MBTA Commuter Rail fare system is the structured zone-based pricing and ticketing framework used to determine and collect passenger fares across Massachusetts Bay Transportation Authority commuter rail lines.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: MBTA Commuter Rail fare system
Target entity description: The MBTA Commuter Rail fare system is the structured zone-based pricing and ticketing framework used to determine and collect passenger fares across Massachusetts Bay Transportation Authority commuter rail lines.
  • A. 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.
  • B. 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.
  • C. 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.
  • D. MBTA Mattapan High-Speed Line
    The MBTA Mattapan High-Speed Line is a light rail trolley service in the Boston area that operates historic PCC streetcars between Ashmont Station in Dorchester and Mattapan, serving communities including Milton, Massachusetts.
  • E. 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.
  • F. None of above. chosen

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_69d85a0b78bc8190b6e5ad51a2c4cfc5 completed April 10, 2026, 2:01 a.m.
NER Named-entity recognition batch_69e0076c9e2481909d7a464b2172f4bf completed April 15, 2026, 9:47 p.m.
NED1 Entity disambiguation (via context triple) batch_69fed341cfb8819086b386c6cb905eda completed May 9, 2026, 6:25 a.m.
NEDg Description generation batch_69fed45bfb0c8190a0a02c51b027bd64 completed May 9, 2026, 6:29 a.m.
NED2 Entity disambiguation (via description) batch_69fed4c6aaf88190af2f1d3a1280b825 completed May 9, 2026, 6:31 a.m.
Created at: April 10, 2026, 3:11 a.m.