Triple
T10082142
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Red Line Alewife branch |
E213926
|
entity |
| Predicate | connectsWith |
P37
|
FINISHED |
| Object |
MBTA Green Line at Park Street station
The MBTA Green Line at Park Street station is a central Boston light rail stop located on the Tremont Street Subway, serving multiple Green Line branches and providing key transfers to the Red Line.
|
E840551
|
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: MBTA Green Line at Park Street station | Statement: [Red Line Alewife branch, connectsWith, MBTA Green Line at Park Street station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA Green Line at Park Street station Context triple: [Red Line Alewife branch, connectsWith, MBTA Green Line at Park Street station]
-
A.
MBTA Green Line at Government Center
The MBTA Green Line at Government Center is a major light rail subway station in downtown Boston that serves as a key transfer point and access hub for nearby civic and historic landmarks.
-
B.
MBTA Blue Line at Government Center
MBTA Blue Line at Government Center is an underground rapid transit station in downtown Boston that serves the Blue Line and provides a key transfer point to the Green Line.
-
C.
MBTA Orange Line at North Station
MBTA Orange Line at North Station is a major Boston rapid transit stop located at the North Station transportation hub, providing subway connections to commuter rail lines and nearby sports and entertainment venues.
-
D.
MBTA Silver Line at South Station
The MBTA Silver Line at South Station is a key Boston bus rapid transit hub providing underground and surface connections between South Station and destinations including the Seaport District and Logan Airport.
-
E.
MBTA Red Line at Harvard station
The MBTA Red Line at Harvard station is a key rapid transit stop in Cambridge, Massachusetts, serving Harvard Square and Harvard University as part of Boston’s primary subway network.
- 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: MBTA Green Line at Park Street station Triple: [Red Line Alewife branch, connectsWith, MBTA Green Line at Park Street station]
Generated description
The MBTA Green Line at Park Street station is a central Boston light rail stop located on the Tremont Street Subway, serving multiple Green Line branches and providing key transfers to the Red Line.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: MBTA Green Line at Park Street station Target entity description: The MBTA Green Line at Park Street station is a central Boston light rail stop located on the Tremont Street Subway, serving multiple Green Line branches and providing key transfers to the Red Line.
-
A.
MBTA Green Line at Government Center
The MBTA Green Line at Government Center is a major light rail subway station in downtown Boston that serves as a key transfer point and access hub for nearby civic and historic landmarks.
-
B.
MBTA Blue Line at Government Center
MBTA Blue Line at Government Center is an underground rapid transit station in downtown Boston that serves the Blue Line and provides a key transfer point to the Green Line.
-
C.
MBTA Orange Line at North Station
MBTA Orange Line at North Station is a major Boston rapid transit stop located at the North Station transportation hub, providing subway connections to commuter rail lines and nearby sports and entertainment venues.
-
D.
MBTA Silver Line at South Station
The MBTA Silver Line at South Station is a key Boston bus rapid transit hub providing underground and surface connections between South Station and destinations including the Seaport District and Logan Airport.
-
E.
MBTA Red Line at Harvard station
The MBTA Red Line at Harvard station is a key rapid transit stop in Cambridge, Massachusetts, serving Harvard Square and Harvard University as part of Boston’s primary subway network.
- 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_69ca839bf730819086900c323c9b8c95 |
completed | March 30, 2026, 2:07 p.m. |
| NER | Named-entity recognition | batch_69cdd03482d481908b03d35dc2d16395 |
completed | April 2, 2026, 2:11 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d2b66b256c8190861066f7c19008d2 |
completed | April 5, 2026, 7:22 p.m. |
| NEDg | Description generation | batch_69d2b78f3c248190b104937e2d669882 |
completed | April 5, 2026, 7:27 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69d2b84a26a481908ab2705d5883cfce |
completed | April 5, 2026, 7:30 p.m. |
Created at: March 30, 2026, 9 p.m.