Triple
T1596166
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA bus route 1 |
E34286
|
entity |
| Predicate | usesInfrastructure |
P6820
|
FINISHED |
| Object |
Harvard bus tunnel
The Harvard bus tunnel is an underground transit facility in Cambridge, Massachusetts, that allows MBTA buses to pass beneath Harvard Square and connect to the Harvard Red Line station.
|
E181535
|
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: Harvard bus tunnel | Statement: [MBTA bus route 1, usesInfrastructure, Harvard bus tunnel]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Harvard bus tunnel Context triple: [MBTA bus route 1, usesInfrastructure, Harvard bus tunnel]
-
A.
Harvard Yard
Harvard Yard is the historic central area of Harvard University’s campus in Cambridge, Massachusetts, known for its iconic brick buildings, freshman dormitories, and academic landmarks.
-
B.
Ted Williams Tunnel (Boston)
The Ted Williams Tunnel in Boston is a major underwater highway tunnel beneath Boston Harbor that forms part of the city's Central Artery/Tunnel Project, commonly known as the Big Dig.
-
C.
South Boston Transitway
The South Boston Transitway is an underground bus rapid transit tunnel in Boston that carries MBTA Silver Line routes between South Station and the Seaport District.
-
D.
Harvard Square
Harvard Square is a historic commercial and cultural center in Cambridge, Massachusetts, known for its vibrant mix of shops, restaurants, street performers, and its proximity to Harvard University.
-
E.
Harvard Bridge
Harvard Bridge is a long roadway bridge in Boston and Cambridge, Massachusetts, best known for carrying Massachusetts Avenue over the Charles River and for its quirky "smoot" length measurement.
- 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: Harvard bus tunnel Triple: [MBTA bus route 1, usesInfrastructure, Harvard bus tunnel]
Generated description
The Harvard bus tunnel is an underground transit facility in Cambridge, Massachusetts, that allows MBTA buses to pass beneath Harvard Square and connect to the Harvard Red Line station.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Harvard bus tunnel Target entity description: The Harvard bus tunnel is an underground transit facility in Cambridge, Massachusetts, that allows MBTA buses to pass beneath Harvard Square and connect to the Harvard Red Line station.
-
A.
Harvard Yard
Harvard Yard is the historic central area of Harvard University’s campus in Cambridge, Massachusetts, known for its iconic brick buildings, freshman dormitories, and academic landmarks.
-
B.
Ted Williams Tunnel (Boston)
The Ted Williams Tunnel in Boston is a major underwater highway tunnel beneath Boston Harbor that forms part of the city's Central Artery/Tunnel Project, commonly known as the Big Dig.
-
C.
South Boston Transitway
The South Boston Transitway is an underground bus rapid transit tunnel in Boston that carries MBTA Silver Line routes between South Station and the Seaport District.
-
D.
Harvard Square
Harvard Square is a historic commercial and cultural center in Cambridge, Massachusetts, known for its vibrant mix of shops, restaurants, street performers, and its proximity to Harvard University.
-
E.
Harvard Bridge
Harvard Bridge is a long roadway bridge in Boston and Cambridge, Massachusetts, best known for carrying Massachusetts Avenue over the Charles River and for its quirky "smoot" length measurement.
- 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_69a885fdcb9c819081ce6f0b8cd477dd |
completed | March 4, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69a9092e46748190b27be7d1aba07dff |
completed | March 5, 2026, 4:40 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ad46a848ec819085c82be8eaea2044 |
completed | March 8, 2026, 9:51 a.m. |
| NEDg | Description generation | batch_69ad4841d278819085507528faeaae3e |
completed | March 8, 2026, 9:58 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ad48ff11d881909fd6e9e40d5f1f38 |
completed | March 8, 2026, 10:01 a.m. |
Created at: March 4, 2026, 7:27 p.m.