Triple
T1666351
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA standard signage |
E36020
|
entity |
| Predicate | relatedTo |
P37
|
FINISHED |
| Object |
MBTA accessibility policies
MBTA accessibility policies are the guidelines and regulations that ensure Boston’s public transit system is usable and safe for riders with disabilities, covering station design, vehicles, signage, and customer assistance.
|
E188571
|
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 accessibility policies | Statement: [MBTA standard signage, relatedTo, MBTA accessibility policies]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA accessibility policies Context triple: [MBTA standard signage, relatedTo, MBTA accessibility policies]
-
A.
MBTA paratransit service
MBTA paratransit service is a door-to-door, shared-ride transportation program providing accessible transit for people with disabilities who are unable to use standard MBTA buses, subways, or trains.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
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.
- 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 accessibility policies Triple: [MBTA standard signage, relatedTo, MBTA accessibility policies]
Generated description
MBTA accessibility policies are the guidelines and regulations that ensure Boston’s public transit system is usable and safe for riders with disabilities, covering station design, vehicles, signage, and customer assistance.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: MBTA accessibility policies Target entity description: MBTA accessibility policies are the guidelines and regulations that ensure Boston’s public transit system is usable and safe for riders with disabilities, covering station design, vehicles, signage, and customer assistance.
-
A.
MBTA paratransit service
MBTA paratransit service is a door-to-door, shared-ride transportation program providing accessible transit for people with disabilities who are unable to use standard MBTA buses, subways, or trains.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
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.
- 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_69a8861286808190939afff3ce8ee31e |
completed | March 4, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69a90adc57cc8190b270004c363768e3 |
completed | March 5, 2026, 4:47 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ad682fd42881908ecd0f331e81aba8 |
completed | March 8, 2026, 12:14 p.m. |
| NEDg | Description generation | batch_69ad69c8af5481909d73d90e1dcaf560 |
completed | March 8, 2026, 12:21 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69ad6a4aebb88190a27350216add031b |
completed | March 8, 2026, 12:23 p.m. |
Created at: March 4, 2026, 7:29 p.m.