Triple
T3474
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Fitchburg Line |
E65
|
entity |
| Predicate | serves |
P98
|
FINISHED |
| Object | Waltham |
E17697
|
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: Waltham | Statement: [MBTA Fitchburg Line, serves, Waltham]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Waltham Context triple: [MBTA Fitchburg Line, serves, Waltham]
-
A.
Waltham, Massachusetts
chosen
Waltham, Massachusetts is a historic city just west of Boston known for its role in the American Industrial Revolution and as home to institutions like Brandeis University and Bentley University.
-
B.
Dedham
Dedham is a historic suburban town in eastern Massachusetts that serves as the county seat of Norfolk County and lies just southwest of Boston.
-
C.
Brookline
Brookline is an affluent, historic suburban town directly bordering Boston, known for its tree-lined streets, excellent public schools, and vibrant residential neighborhoods.
-
D.
Chelsea, Massachusetts
Chelsea, Massachusetts is a small, densely populated city just north of Boston known for its industrial history, diverse immigrant communities, and location along the Mystic River.
-
E.
Needham
Needham is a suburban town in Norfolk County, Massachusetts, located southwest of downtown Boston and known for its residential character and strong public schools.
- 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_69a238d6b47881909e68288aed2fd858 |
completed | Feb. 28, 2026, 12:37 a.m. |
| NER | Named-entity recognition | batch_69a2399c646c8190b4977ed56b8835a8 |
completed | Feb. 28, 2026, 12:41 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a3bc1de7408190833fe3fb65c2a7b3 |
completed | March 1, 2026, 4:10 a.m. |
Created at: Feb. 28, 2026, 12:40 a.m.