Triple
T3404424
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Braintree Branch |
E71735
|
entity |
| Predicate | connectsWith |
P37
|
FINISHED |
| Object | MBTA Commuter Rail at Quincy Center |
E39071
|
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 Commuter Rail at Quincy Center | Statement: [MBTA Braintree Branch, connectsWith, MBTA Commuter Rail at Quincy Center]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA Commuter Rail at Quincy Center Context triple: [MBTA Braintree Branch, connectsWith, MBTA Commuter Rail at Quincy Center]
-
A.
MBTA Ashmont Branch
The MBTA Ashmont Branch is a rapid transit line of Boston’s Red Line that runs from JFK/UMass station through Dorchester to Ashmont, serving several southern neighborhoods of the city.
-
B.
MBTA Lansdowne
MBTA Lansdowne is a commuter rail station in Boston, Massachusetts, serving the Framingham/Worcester Line near Fenway Park.
-
C.
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.
-
D.
Quincy Center station
chosen
Quincy Center station is a major MBTA Red Line rapid transit and commuter rail hub located in downtown Quincy, Massachusetts.
-
E.
North Quincy station
North Quincy station is a rapid transit stop on Boston's MBTA Red Line serving the North Quincy neighborhood in Quincy, Massachusetts.
- 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_69ad85aac4808190a092c9cc8911f584 |
completed | March 8, 2026, 2:20 p.m. |
| NER | Named-entity recognition | batch_69adb8e8ea848190b4ac167f1aba8ebd |
completed | March 8, 2026, 5:59 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b34bd69f388190981da6454dfd4fb1 |
completed | March 12, 2026, 11:27 p.m. |
Created at: March 8, 2026, 3:14 p.m.