Triple
T2383532
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Green Line (MBTA) |
E46364
|
entity |
| Predicate | terminus |
P388
|
FINISHED |
| Object |
Medford/Tufts station
Medford/Tufts station is a Massachusetts Bay Transportation Authority light rail station in Medford serving Tufts University and the surrounding area.
|
E314392
|
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: Medford/Tufts station | Statement: [Green Line (MBTA), terminus, Medford/Tufts station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Medford/Tufts station Context triple: [Green Line (MBTA), terminus, Medford/Tufts station]
-
A.
Medford station
Medford station is a Long Island Rail Road commuter rail stop located in Medford, New York, serving passengers on the Ronkonkoma Branch.
-
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.
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.
-
D.
Tufts Medical Center station
Tufts Medical Center station is an underground rapid transit stop in Boston, Massachusetts, located in the Chinatown/South Cove area and serving the MBTA Orange Line.
-
E.
Boylston station
Boylston station is a historic underground light rail stop in downtown Boston that serves the MBTA Green Line.
- 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: Medford/Tufts station Triple: [Green Line (MBTA), terminus, Medford/Tufts station]
Generated description
Medford/Tufts station is a Massachusetts Bay Transportation Authority light rail station in Medford serving Tufts University and the surrounding area.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Medford/Tufts station Target entity description: Medford/Tufts station is a Massachusetts Bay Transportation Authority light rail station in Medford serving Tufts University and the surrounding area.
-
A.
Medford station
Medford station is a Long Island Rail Road commuter rail stop located in Medford, New York, serving passengers on the Ronkonkoma Branch.
-
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.
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.
-
D.
Tufts Medical Center station
Tufts Medical Center station is an underground rapid transit stop in Boston, Massachusetts, located in the Chinatown/South Cove area and serving the MBTA Orange Line.
-
E.
Boylston station
Boylston station is a historic underground light rail stop in downtown Boston that serves the MBTA Green Line.
- 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_69a88a1554a48190a0180682bcf099be |
completed | March 4, 2026, 7:37 p.m. |
| NER | Named-entity recognition | batch_69abc7bafa248190a68e8f1e081f4817 |
completed | March 7, 2026, 6:37 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b0fc308f388190a10f79a02a867057 |
completed | March 11, 2026, 5:22 a.m. |
| NEDg | Description generation | batch_69b0fd07b82881908d52ab2db2f2e54c |
completed | March 11, 2026, 5:26 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69b0fdba0fd88190a2e760f1770e846c |
completed | March 11, 2026, 5:29 a.m. |
Created at: March 4, 2026, 7:57 p.m.