Triple
T22963878
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Commuter Rail at South Station |
E570980
|
entity |
| Predicate | hasConnection |
P8776
|
FINISHED |
| Object | Amtrak at South Station |
—
|
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: Amtrak at South Station | Statement: [MBTA Commuter Rail at South Station, hasConnection, Amtrak at South Station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Amtrak at South Station Context triple: [MBTA Commuter Rail at South Station, hasConnection, Amtrak at South Station]
-
A.
Amtrak at South Station
chosen
Amtrak at South Station is the intercity passenger rail service operating from Boston’s historic South Station, providing regional and long-distance train connections along the Northeast Corridor and beyond.
-
B.
MBTA Commuter Rail at South Station
MBTA Commuter Rail at South Station is the regional rail service hub in downtown Boston that provides commuter train connections between the city and surrounding suburbs and cities across Massachusetts and neighboring states.
-
C.
Amtrak at Back Bay station
Amtrak at Back Bay station refers to the intercity passenger rail services, including routes like the Northeast Regional and Acela, that stop at Boston’s centrally located Back Bay transportation hub.
-
D.
MBTA Commuter Rail at North Station
MBTA Commuter Rail at North Station is a major Boston rail hub where regional trains connect downtown with numerous suburbs and outlying cities across Massachusetts.
-
E.
MBTA Silver Line at South Station
The MBTA Silver Line at South Station is a key Boston bus rapid transit hub providing underground and surface connections between South Station and destinations including the Seaport District and Logan Airport.
- 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_69e245b212a88190b5259caf51606084 |
completed | April 17, 2026, 2:37 p.m. |
| NER | Named-entity recognition | batch_69f181f66fbc8190a4a7b73d17537132 |
completed | April 29, 2026, 3:58 a.m. |
Created at: April 17, 2026, 3:47 p.m.