Triple
T145791
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Braintree branch |
E3326
|
entity |
| Predicate | terminusNorth |
P3375
|
FINISHED |
| Object |
JFK/UMass station
JFK/UMass station is a major MBTA Red Line rapid transit and commuter rail hub in Boston serving the John F. Kennedy Presidential Library and the University of Massachusetts Boston.
|
E38179
|
NE FINISHED |
How this triple was built (4 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: JFK/UMass station | Statement: [Braintree branch, terminusNorth, JFK/UMass station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: JFK/UMass station Context triple: [Braintree branch, terminusNorth, JFK/UMass station]
-
A.
Wellington Station (MBTA)
Wellington Station (MBTA) is an Orange Line rapid transit station in Medford, Massachusetts, serving as a key park-and-ride and bus transfer hub just north of downtown Boston.
-
B.
Littleton/Route 495 station
Littleton/Route 495 station is a Massachusetts Bay Transportation Authority commuter rail stop in Littleton, Massachusetts, serving the Fitchburg Line near Interstate 495.
-
C.
MBTA Silver Hill station
MBTA Silver Hill station is a small commuter rail stop on the Massachusetts Bay Transportation Authority’s Fitchburg Line serving the Silver Hill neighborhood of Weston, Massachusetts.
-
D.
South Station
South Station is Boston’s major intercity rail and bus terminal and a key MBTA subway hub in the city’s downtown.
-
E.
North Station
North Station is a major transportation hub in Boston, Massachusetts, serving as a key commuter rail, subway, and intercity bus terminal integrated with the TD Garden arena.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: JFK/UMass station Triple: [Braintree branch, terminusNorth, JFK/UMass station]
Generated description
JFK/UMass station is a major MBTA Red Line rapid transit and commuter rail hub in Boston serving the John F. Kennedy Presidential Library and the University of Massachusetts Boston.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: JFK/UMass station Target entity description: JFK/UMass station is a major MBTA Red Line rapid transit and commuter rail hub in Boston serving the John F. Kennedy Presidential Library and the University of Massachusetts Boston.
-
A.
Wellington Station (MBTA)
Wellington Station (MBTA) is an Orange Line rapid transit station in Medford, Massachusetts, serving as a key park-and-ride and bus transfer hub just north of downtown Boston.
-
B.
Littleton/Route 495 station
Littleton/Route 495 station is a Massachusetts Bay Transportation Authority commuter rail stop in Littleton, Massachusetts, serving the Fitchburg Line near Interstate 495.
-
C.
MBTA Silver Hill station
MBTA Silver Hill station is a small commuter rail stop on the Massachusetts Bay Transportation Authority’s Fitchburg Line serving the Silver Hill neighborhood of Weston, Massachusetts.
-
D.
South Station
South Station is Boston’s major intercity rail and bus terminal and a key MBTA subway hub in the city’s downtown.
-
E.
North Station
North Station is a major transportation hub in Boston, Massachusetts, serving as a key commuter rail, subway, and intercity bus terminal integrated with the TD Garden arena.
- F. None of above. chosen
Provenance (5 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_69a252868de4819080e21c9938bfe8b6 |
completed | Feb. 28, 2026, 2:27 a.m. |
| NER | Named-entity recognition | batch_69a257ea7eac8190884a53453a9e0dd6 |
completed | Feb. 28, 2026, 2:50 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a3a5cd067c8190a25649f80c69ee89 |
completed | March 1, 2026, 2:34 a.m. |
| NEDg | Description generation | batch_69a3a7b0c9a481909555d21be71d1f1d |
completed | March 1, 2026, 2:42 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a3a7e8c82c8190b4e2aaf393dbf386 |
completed | March 1, 2026, 2:43 a.m. |
Created at: Feb. 28, 2026, 2:31 a.m.