Triple
T21653678
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Green Line station |
E534401
|
entity |
| Predicate | fareZone |
P844
|
FINISHED |
| Object | MBTA rapid transit flat fare zone |
—
|
NE NERFINISHED |
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 rapid transit flat fare zone | Statement: [MBTA Green Line station, fareZone, MBTA rapid transit flat fare zone]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA rapid transit flat fare zone Context triple: [MBTA Green Line station, fareZone, MBTA rapid transit flat fare zone]
-
A.
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.
-
B.
MBTA rapid transit zone
chosen
The MBTA rapid transit zone is the fare and service area designation used by Boston’s subway and light rail system to organize routes, stops, and pricing within the Massachusetts Bay Transportation Authority network.
-
C.
MBTA Commuter Rail Zone 6
MBTA Commuter Rail Zone 6 is a fare zone in the Greater Boston regional rail system used to determine ticket prices for trips between outer suburban stations and central Boston.
-
D.
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.
-
E.
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.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69e0c466aec88190ba39c7543dbc8ba2 |
completed | April 16, 2026, 11:13 a.m. |
| NER | Named-entity recognition | batch_69ef59164fe081908abd2e33dcd67def |
completed | April 27, 2026, 12:39 p.m. |
Created at: April 16, 2026, 6:36 p.m.