Triple
T11368982
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Orange Line Back Bay branch |
E269290
|
entity |
| Predicate | connectsWith |
P37
|
FINISHED |
| Object |
MBTA Red Line at Downtown Crossing
The MBTA Red Line at Downtown Crossing is a major rapid transit station in Boston’s downtown core that serves as a key transfer point between the Red and Orange subway lines and provides access to nearby commercial and historic districts.
|
E921755
|
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 Red Line at Downtown Crossing | Statement: [MBTA Orange Line Back Bay branch, connectsWith, MBTA Red Line at Downtown Crossing]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA Red Line at Downtown Crossing Context triple: [MBTA Orange Line Back Bay branch, connectsWith, MBTA Red Line at Downtown Crossing]
-
A.
MBTA Red Line at South Station
The MBTA Red Line at South Station is a major rapid transit stop in downtown Boston that serves as a key hub for subway, commuter rail, intercity rail, and bus connections.
-
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 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.
-
D.
MBTA Red Line at Alewife Station
The MBTA Red Line at Alewife Station is a major rapid transit terminus in North Cambridge that connects surrounding neighborhoods like Cambridge Highlands to downtown Boston and the broader subway network.
-
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 Red Line at Downtown Crossing Triple: [MBTA Orange Line Back Bay branch, connectsWith, MBTA Red Line at Downtown Crossing]
Generated description
The MBTA Red Line at Downtown Crossing is a major rapid transit station in Boston’s downtown core that serves as a key transfer point between the Red and Orange subway lines and provides access to nearby commercial and historic districts.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: MBTA Red Line at Downtown Crossing Target entity description: The MBTA Red Line at Downtown Crossing is a major rapid transit station in Boston’s downtown core that serves as a key transfer point between the Red and Orange subway lines and provides access to nearby commercial and historic districts.
-
A.
MBTA Red Line at South Station
The MBTA Red Line at South Station is a major rapid transit stop in downtown Boston that serves as a key hub for subway, commuter rail, intercity rail, and bus connections.
-
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 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.
-
D.
MBTA Red Line at Alewife Station
The MBTA Red Line at Alewife Station is a major rapid transit terminus in North Cambridge that connects surrounding neighborhoods like Cambridge Highlands to downtown Boston and the broader subway network.
-
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_69d6aacca1048190b39dbbc2174616fa |
completed | April 8, 2026, 7:21 p.m. |
| NER | Named-entity recognition | batch_69d7ea89e1148190b0ca29db9d7e2cbd |
completed | April 9, 2026, 6:06 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69e5567b67f88190b0412e30b346d36d |
completed | April 19, 2026, 10:26 p.m. |
| NEDg | Description generation | batch_69e562c6e7c8819098d22a6e0daa4a51 |
completed | April 19, 2026, 11:18 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69e56a472f0c819086c1cccaa5ca0ae7 |
completed | April 19, 2026, 11:50 p.m. |
Created at: April 8, 2026, 9:33 p.m.