Triple
T10928733
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Fitchburg station |
E258141
|
entity |
| Predicate | hasAbbreviation |
P43
|
FINISHED |
| Object | MBTA Fitchburg |
E65
|
NE FINISHED |
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 Fitchburg | Statement: [Fitchburg station, hasAbbreviation, MBTA Fitchburg]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA Fitchburg Context triple: [Fitchburg station, hasAbbreviation, MBTA Fitchburg]
-
A.
MBTA Fitchburg Line
chosen
The MBTA Fitchburg Line is a commuter rail route in the Greater Boston area that runs between Boston and Fitchburg, serving numerous suburban communities along the way.
-
B.
MBTA Braintree Branch
The MBTA Braintree Branch is a southern extension of Boston’s Red Line rapid transit system that runs from JFK/UMass through several South Shore communities to Braintree.
-
C.
MBTA Lowell Line
The MBTA Lowell Line is a commuter rail service operated by the Massachusetts Bay Transportation Authority that runs between Boston’s North Station and Lowell, serving several communities in northern Massachusetts.
-
D.
MBTA Franklin Line
The MBTA Franklin Line is a commuter rail service in the Greater Boston area that connects Boston’s South Station with Franklin and other communities in southeastern Massachusetts.
-
E.
MBTA Mattapan Line
The MBTA Mattapan Line is a light rail trolley service in the Boston area that operates historic streetcars between Ashmont Station and Mattapan, serving neighborhoods in Boston and Milton.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69d6aa864ed88190818280ab6791d065 |
completed | April 8, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69d7709eb0ec819093f7d3f99097bbe4 |
completed | April 9, 2026, 9:25 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69e2d710f65c8190a4ef17a6d90a19d2 |
completed | April 18, 2026, 12:57 a.m. |
Created at: April 8, 2026, 9:22 p.m.