Triple
T3014491
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Commuter Rail Lowell Line |
E82302
|
entity |
| Predicate | fareMedium |
P1303
|
FINISHED |
| Object |
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.
|
E317771
|
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 mTicket mobile app accepted | Statement: [MBTA Commuter Rail Lowell Line, fareMedium, MBTA mTicket mobile app accepted]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA mTicket mobile app accepted Context triple: [MBTA Commuter Rail Lowell Line, fareMedium, MBTA mTicket mobile app accepted]
-
A.
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.
-
B.
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.
-
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 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.
-
E.
MBTA customer service locations
MBTA customer service locations are official transit agency offices and kiosks where riders can get assistance, manage fare products, and resolve issues related to Boston’s public transportation 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 mTicket mobile app accepted Triple: [MBTA Commuter Rail Lowell Line, fareMedium, MBTA mTicket mobile app accepted]
Generated description
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.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: MBTA mTicket mobile app accepted Target entity description: 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.
-
A.
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.
-
B.
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.
-
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 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.
-
E.
MBTA customer service locations
MBTA customer service locations are official transit agency offices and kiosks where riders can get assistance, manage fare products, and resolve issues related to Boston’s public transportation system.
- 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_69ad8b1eb53481908c39bbcd1ec104b2 |
completed | March 8, 2026, 2:43 p.m. |
| NER | Named-entity recognition | batch_69ad9a69e8148190a97507740c9d26a8 |
completed | March 8, 2026, 3:48 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b12e6b78448190beb41460314278ec |
completed | March 11, 2026, 8:57 a.m. |
| NEDg | Description generation | batch_69b12faf75ac81909031430d58919c95 |
completed | March 11, 2026, 9:02 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69b1c7d3f2c88190aa26d8d12777b2a2 |
completed | March 11, 2026, 7:51 p.m. |
Created at: March 8, 2026, 3 p.m.