Triple
T1721021
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Braintree station |
E37388
|
entity |
| Predicate | zoneSystem |
P2160
|
FINISHED |
| Object |
MBTA Commuter Rail fare zones
MBTA Commuter Rail fare zones are a distance-based pricing system that divides stations into concentric zones around Boston to determine commuter rail ticket and pass costs.
|
E193934
|
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 zones | Statement: [Braintree station, zoneSystem, MBTA Commuter Rail fare zones]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA Commuter Rail fare zones Context triple: [Braintree station, zoneSystem, MBTA Commuter Rail fare zones]
-
A.
MBTA Commuter Rail Zone 1A
MBTA Commuter Rail Zone 1A is the innermost fare zone of the Boston-area commuter rail system, covering central city stations with the lowest commuter rail fares.
-
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 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.
-
D.
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.
-
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 Commuter Rail fare zones Triple: [Braintree station, zoneSystem, MBTA Commuter Rail fare zones]
Generated description
MBTA Commuter Rail fare zones are a distance-based pricing system that divides stations into concentric zones around Boston to determine commuter rail ticket and pass costs.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: MBTA Commuter Rail fare zones Target entity description: MBTA Commuter Rail fare zones are a distance-based pricing system that divides stations into concentric zones around Boston to determine commuter rail ticket and pass costs.
-
A.
MBTA Commuter Rail Zone 1A
MBTA Commuter Rail Zone 1A is the innermost fare zone of the Boston-area commuter rail system, covering central city stations with the lowest commuter rail fares.
-
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 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.
-
D.
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.
-
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_69a8861912dc8190931af43b4b9158a7 |
completed | March 4, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69aa63558d7c8190830cb8ee2e4a8932 |
completed | March 6, 2026, 5:17 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ad8aeca12881908efad5991bb0f12b |
completed | March 8, 2026, 2:42 p.m. |
| NEDg | Description generation | batch_69ad957bd63c819099a508ca5c4102cc |
completed | March 8, 2026, 3:27 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69ad97b18f9c8190a9c5ed80b5ed0195 |
completed | March 8, 2026, 3:37 p.m. |
Created at: March 4, 2026, 7:30 p.m.