Triple
T7126148
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Green Line B branch |
E166066
|
entity |
| Predicate | hasStop |
P17789
|
FINISHED |
| Object |
Boston University West station
Boston University West station is a light rail stop on the MBTA Green Line in Boston serving the Boston University campus area.
|
E647995
|
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: Boston University West station | Statement: [MBTA Green Line B branch, hasStop, Boston University West station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Boston University West station Context triple: [MBTA Green Line B branch, hasStop, Boston University West station]
-
A.
Boston University East station
Boston University East station is a surface light rail stop in Boston, Massachusetts, serving Boston University along the MBTA Green Line.
-
B.
Harvard station
Harvard station is a major Red Line subway and bus hub on the Massachusetts Bay Transportation Authority (MBTA) system located in Harvard Square in Cambridge, Massachusetts.
-
C.
Medford/Tufts station
Medford/Tufts station is a Massachusetts Bay Transportation Authority light rail station in Medford serving Tufts University and the surrounding area.
-
D.
Boylston station
Boylston station is a historic underground light rail stop in downtown Boston that serves the MBTA Green Line.
-
E.
Northeastern University station
Northeastern University station is a light rail stop on Boston’s MBTA Green Line serving the Northeastern University campus and the surrounding Fenway–Kenmore area.
- 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: Boston University West station Triple: [MBTA Green Line B branch, hasStop, Boston University West station]
Generated description
Boston University West station is a light rail stop on the MBTA Green Line in Boston serving the Boston University campus area.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Boston University West station Target entity description: Boston University West station is a light rail stop on the MBTA Green Line in Boston serving the Boston University campus area.
-
A.
Boston University East station
Boston University East station is a surface light rail stop in Boston, Massachusetts, serving Boston University along the MBTA Green Line.
-
B.
Harvard station
Harvard station is a major Red Line subway and bus hub on the Massachusetts Bay Transportation Authority (MBTA) system located in Harvard Square in Cambridge, Massachusetts.
-
C.
Medford/Tufts station
Medford/Tufts station is a Massachusetts Bay Transportation Authority light rail station in Medford serving Tufts University and the surrounding area.
-
D.
Boylston station
Boylston station is a historic underground light rail stop in downtown Boston that serves the MBTA Green Line.
-
E.
Northeastern University station
Northeastern University station is a light rail stop on Boston’s MBTA Green Line serving the Northeastern University campus and the surrounding Fenway–Kenmore area.
- 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_69c6888350588190870cd552b427a1cd |
completed | March 27, 2026, 1:39 p.m. |
| NER | Named-entity recognition | batch_69c6e64d99888190a93c1822e19b5457 |
completed | March 27, 2026, 8:19 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c7bf7c0bb88190ac03e2279512d837 |
completed | March 28, 2026, 11:46 a.m. |
| NEDg | Description generation | batch_69c7bfe7143481908c4da6b67f47f19e |
completed | March 28, 2026, 11:47 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69c7c05fd088819083df4c7167216ca2 |
completed | March 28, 2026, 11:49 a.m. |
Created at: March 27, 2026, 2:44 p.m.