Triple
T20060140
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Malden Center |
E499447
|
entity |
| Predicate | servedBy |
P82
|
FINISHED |
| Object | MBTA Haverhill Line |
—
|
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: MBTA Haverhill Line | Statement: [Malden Center, servedBy, MBTA Haverhill Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA Haverhill Line Context triple: [Malden Center, servedBy, MBTA Haverhill Line]
-
A.
MBTA Commuter Rail Haverhill Line
chosen
The MBTA Commuter Rail Haverhill Line is a Boston-area commuter rail route that runs between Boston’s North Station and the city of Haverhill, serving numerous communities north of Boston.
-
B.
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.
-
C.
MBTA Fitchburg Line
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.
-
D.
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.
-
E.
MBTA Middleborough/Lakeville
MBTA Middleborough/Lakeville is a Massachusetts Bay Transportation Authority commuter rail station in Middleborough, Massachusetts, serving the Middleborough/Lakeville Line to and from Boston.
- 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_69da6276bcf48190aabbf279192a5fb4 |
completed | April 11, 2026, 3:02 p.m. |
| NER | Named-entity recognition | batch_69e66374f4a48190beb575a6c84ebdb4 |
completed | April 20, 2026, 5:33 p.m. |
Created at: April 11, 2026, 3:38 p.m.