Triple
T4178917
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA diesel locomotives |
E86545
|
entity |
| Predicate | regionServed |
P82
|
FINISHED |
| Object | eastern Massachusetts |
E34561
|
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: eastern Massachusetts | Statement: [MBTA diesel locomotives, regionServed, eastern Massachusetts]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: eastern Massachusetts Context triple: [MBTA diesel locomotives, regionServed, eastern Massachusetts]
-
A.
eastern Massachusetts
chosen
Eastern Massachusetts is the densely populated, coastal portion of the state that includes the Greater Boston area and many of its major cultural, economic, and educational centers.
-
B.
Southeastern Massachusetts
Southeastern Massachusetts is a region of the U.S. state of Massachusetts that encompasses communities south and east of Boston, including parts of Plymouth and Bristol counties and serving as a gateway to Cape Cod.
-
C.
Southern Massachusetts
Southern Massachusetts is the region comprising the southern portion of the state of Massachusetts, including coastal communities along Buzzards Bay and Narragansett Bay as well as inland towns south of Worcester and Boston.
-
D.
Western Massachusetts
Western Massachusetts is the largely rural, hilly western region of the state known for its scenic landscapes, college towns, and cultural destinations such as the Berkshires.
-
E.
Northern Massachusetts
Northern Massachusetts is the upper region of the state that includes communities near the New Hampshire border and is characterized by a mix of suburban towns, small cities, and rural areas.
- 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_69aed93de98c8190ad838ce507b77c8a |
completed | March 9, 2026, 2:29 p.m. |
| NER | Named-entity recognition | batch_69af030114c88190b725908a32ace750 |
completed | March 9, 2026, 5:27 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b589f5864881909c9fc787dd9b2341 |
completed | March 14, 2026, 4:16 p.m. |
Created at: March 9, 2026, 3:45 p.m.