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.