Triple
T21367139
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Mattapan Line |
E526945
|
entity |
| Predicate | connectsRiver |
P34005
|
FINISHED |
| Object | Neponset River corridor |
E100674
|
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: Neponset River corridor | Statement: [MBTA Mattapan Line, connectsRiver, Neponset River corridor]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Neponset River corridor Context triple: [MBTA Mattapan Line, connectsRiver, Neponset River corridor]
-
A.
Neponset River valley
chosen
The Neponset River valley is a geographic corridor in eastern Massachusetts encompassing communities along the Neponset River, historically significant for industry and now known for its residential neighborhoods, parks, and transit links into Boston.
-
B.
Neponset River
The Neponset River is a historically significant waterway in eastern Massachusetts that flows from Foxborough to Boston Harbor, forming part of the boundary between Boston and several neighboring communities.
-
C.
Nashua River watershed
The Nashua River watershed is a river basin in north-central Massachusetts and southern New Hampshire that drains the lands surrounding the Nashua River and its tributaries.
-
D.
Penobscot River Corridor
The Penobscot River Corridor is a major protected recreation and conservation area in Maine that preserves extensive stretches of the Penobscot River and surrounding forests for camping, paddling, fishing, and wildlife habitat.
-
E.
Pequest River valley
The Pequest River valley is a scenic river valley in northwestern New Jersey known for its rolling farmland, wetlands, and trout-rich Pequest River.
- 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_69e0b51e80808190ba5cb05667af02a9 |
completed | April 16, 2026, 10:08 a.m. |
| NER | Named-entity recognition | batch_69ee5bae5eb88190be6d9ff4dc03d52b |
completed | April 26, 2026, 6:38 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a09ad6e67c88190b8152ce0bcd77f1c |
completed | May 17, 2026, 11:58 a.m. |
Created at: April 16, 2026, 5:09 p.m.