Triple
T1178217
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Green Line |
E25076
|
entity |
| Predicate | hasBranch |
P35
|
FINISHED |
| Object |
Medford/Tufts Branch
Medford/Tufts Branch is a segment of Boston’s light rail network serving the Tufts University area and nearby Medford neighborhoods.
|
E134783
|
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 Branch | Statement: [MBTA Green Line, hasBranch, Medford/Tufts Branch]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Medford/Tufts Branch Context triple: [MBTA Green Line, hasBranch, Medford/Tufts Branch]
-
A.
Medford Public Library
Medford Public Library is the main public library serving the residents of Medford, Massachusetts with lending materials, community programs, and educational resources.
-
B.
Newburyport Branch
The Newburyport Branch is a rail line segment in northeastern Massachusetts that forms part of the MBTA Commuter Rail’s Newburyport/Rockport Line, connecting communities north of Boston.
-
C.
Ashmont branch
The Ashmont branch is a southern segment of Boston's MBTA Red Line rapid transit system that serves neighborhoods including Dorchester and terminates at Ashmont station.
-
D.
Newton, Massachusetts public library system
The Newton, Massachusetts public library system is a network of public libraries serving the city of Newton with lending collections, research resources, and community programs for residents of all ages.
-
E.
Cambridge Public Library Central Square Branch
Cambridge Public Library Central Square Branch is a neighborhood public library facility in Cambridge, Massachusetts, providing lending services, community programs, and study spaces to residents in the Central Square 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: Medford/Tufts Branch Triple: [MBTA Green Line, hasBranch, Medford/Tufts Branch]
Generated description
Medford/Tufts Branch is a segment of Boston’s light rail network serving the Tufts University area and nearby Medford neighborhoods.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Medford/Tufts Branch Target entity description: Medford/Tufts Branch is a segment of Boston’s light rail network serving the Tufts University area and nearby Medford neighborhoods.
-
A.
Medford Public Library
Medford Public Library is the main public library serving the residents of Medford, Massachusetts with lending materials, community programs, and educational resources.
-
B.
Newburyport Branch
The Newburyport Branch is a rail line segment in northeastern Massachusetts that forms part of the MBTA Commuter Rail’s Newburyport/Rockport Line, connecting communities north of Boston.
-
C.
Ashmont branch
The Ashmont branch is a southern segment of Boston's MBTA Red Line rapid transit system that serves neighborhoods including Dorchester and terminates at Ashmont station.
-
D.
Newton, Massachusetts public library system
The Newton, Massachusetts public library system is a network of public libraries serving the city of Newton with lending collections, research resources, and community programs for residents of all ages.
-
E.
Cambridge Public Library Central Square Branch
Cambridge Public Library Central Square Branch is a neighborhood public library facility in Cambridge, Massachusetts, providing lending services, community programs, and study spaces to residents in the Central Square 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_69a494267b4c819088c97a59182bf56a |
completed | March 1, 2026, 7:31 p.m. |
| NER | Named-entity recognition | batch_69a4bd10ccc481908d5bcef648aab3c1 |
completed | March 1, 2026, 10:26 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ac6f1cab308190bdb5ae1e01d83b61 |
completed | March 7, 2026, 6:31 p.m. |
| NEDg | Description generation | batch_69ac6ff4c62881908cf88169e99d2983 |
completed | March 7, 2026, 6:35 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69ac704cdaf08190b77b0b9345537d84 |
completed | March 7, 2026, 6:37 p.m. |
Created at: March 1, 2026, 7:45 p.m.