Triple

T11606609
Position Surface form Disambiguated ID Type / Status
Subject MBTA CharlieTicket E275274 entity
Predicate canBePurchasedAt P51662 FINISHED
Object MBTA stations
MBTA stations are the public transit stops and hubs in the Greater Boston area that serve subway, bus, commuter rail, and ferry services operated by the Massachusetts Bay Transportation Authority.
E937017 NE FINISHED

How this triple was built (5 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 stations | Statement: [MBTA CharlieTicket, canBePurchasedAt, MBTA stations]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: MBTA stations
Context triple: [MBTA CharlieTicket, canBePurchasedAt, MBTA stations]
  • A. 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.
  • B. MBTA Orange Line stations
    MBTA Orange Line stations are the rapid transit stops along Boston’s Orange Line, serving key neighborhoods and connecting riders to major residential, commercial, and educational areas in the Greater Boston region.
  • C. MBTA Green Line stations
    MBTA Green Line stations are the stops along Boston’s light rail Green Line, serving neighborhoods and suburbs with trolley-style rapid transit.
  • 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 Green Line E branch stations
    MBTA Green Line E branch stations are light rail stops in Boston and nearby areas served by the E branch of the Massachusetts Bay Transportation Authority’s Green Line.
  • 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 stations
Triple: [MBTA CharlieTicket, canBePurchasedAt, MBTA stations]
Generated description
MBTA stations are the public transit stops and hubs in the Greater Boston area that serve subway, bus, commuter rail, and ferry services operated by the Massachusetts Bay Transportation Authority.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: MBTA stations
Target entity description: MBTA stations are the public transit stops and hubs in the Greater Boston area that serve subway, bus, commuter rail, and ferry services operated by the Massachusetts Bay Transportation Authority.
  • A. 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.
  • B. MBTA Orange Line stations
    MBTA Orange Line stations are the rapid transit stops along Boston’s Orange Line, serving key neighborhoods and connecting riders to major residential, commercial, and educational areas in the Greater Boston region.
  • C. MBTA Green Line stations
    MBTA Green Line stations are the stops along Boston’s light rail Green Line, serving neighborhoods and suburbs with trolley-style rapid transit.
  • 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 Green Line E branch stations
    MBTA Green Line E branch stations are light rail stops in Boston and nearby areas served by the E branch of the Massachusetts Bay Transportation Authority’s Green Line.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: canBePurchasedAt
Context triple: [MBTA CharlieTicket, canBePurchasedAt, MBTA stations]
  • A. canBePurchasedWith
    Indicates that one entity is able to be bought or acquired using another entity as the form of payment.
  • B. purchaseLocation
    Indicates the place or venue where a purchase or transaction is made.
  • C. isSoldIn chosen
    Indicates that a product or item is available for purchase within a specified location, market, or sales channel.
  • D. purchasedFrom
    Indicates that one entity bought or acquired something from another entity as the seller or source.
  • E. availableOnlineAt
    Indicates that something can be accessed or obtained via a specified online source or location.
  • F. None of above.

Provenance (6 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_69d6aaf84b548190ac072e4fb89ae18f completed April 8, 2026, 7:22 p.m.
NER Named-entity recognition batch_69d89551649c81908096ff392677442d completed April 10, 2026, 6:14 a.m.
NED1 Entity disambiguation (via context triple) batch_69ee871c3dbc8190922d125a04a9ee98 completed April 26, 2026, 9:43 p.m.
NEDg Description generation batch_69ee9cf1cb2481908bc473c87bc42d60 completed April 26, 2026, 11:17 p.m.
NED2 Entity disambiguation (via description) batch_69eecd31894481908dbd55f605c693f9 completed April 27, 2026, 2:42 a.m.
PD Predicate disambiguation batch_69d85dd20d188190863d1190d4c16048 completed April 10, 2026, 2:17 a.m.
Created at: April 8, 2026, 9:38 p.m.