Triple
T9557504
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Central station |
E230577
|
entity |
| Predicate | fareSystem |
P395
|
FINISHED |
| Object | MBTA contactless payment system |
E17394
|
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 contactless payment system | Statement: [Central station, fareSystem, MBTA contactless payment system]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA contactless payment system Context triple: [Central station, fareSystem, MBTA contactless payment system]
-
A.
MBTA mTicket mobile app accepted
The MBTA mTicket mobile app accepted is a digital ticketing platform that allows passengers to purchase and display commuter rail fares on their mobile devices.
-
B.
MBTA contactless fare system "AFC 2.0" (planned)
chosen
The MBTA contactless fare system "AFC 2.0" is a planned modern payment platform for Boston’s transit network that will allow riders to tap in with contactless cards, smartphones, and other devices across all modes of service.
-
C.
MBTA CharlieCard
The MBTA CharlieCard is a reusable contactless smart card used to pay fares on Boston’s public transit system, including subways, buses, and some commuter rail and ferry services.
-
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.
Subway smartcard
The Subway smartcard is a reusable contactless payment card used to conveniently pay fares on the Glasgow Subway system.
- 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_69ca847e53a88190a60eed7e02257f10 |
completed | March 30, 2026, 2:11 p.m. |
| NER | Named-entity recognition | batch_69cd99487b4c819086e02e29e37b593f |
completed | April 1, 2026, 10:16 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d15296303c8190adda4b24036d9390 |
completed | April 4, 2026, 6:04 p.m. |
Created at: March 30, 2026, 8:03 p.m.