Triple
T4178931
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA diesel locomotives |
E86545
|
entity |
| Predicate | maintainedAt |
P32276
|
FINISHED |
| Object |
Boston Engine Terminal
Boston Engine Terminal is a major Massachusetts Bay Transportation Authority maintenance and storage facility for its commuter rail locomotive fleet in Boston, Massachusetts.
|
E419688
|
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 Engine Terminal | Statement: [MBTA diesel locomotives, maintainedAt, Boston Engine Terminal]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Boston Engine Terminal Context triple: [MBTA diesel locomotives, maintainedAt, Boston Engine Terminal]
-
A.
Elizabeth Marine Terminal
Elizabeth Marine Terminal is a major container shipping port facility in Elizabeth, New Jersey, forming a key part of the Port of New York and New Jersey.
-
B.
Hound Point Terminal
Hound Point Terminal is a major crude oil loading facility located on the Firth of Forth in Scotland, serving as an important export terminal for North Sea oil.
-
C.
Packer Avenue Marine Terminal
Packer Avenue Marine Terminal is a major cargo and container handling facility within the Port of Philadelphia, serving as a key hub for international maritime trade on the U.S. East Coast.
-
D.
Dames Point Marine Terminal
Dames Point Marine Terminal is a major deepwater cargo facility in Jacksonville, Florida, serving as one of JAXPORT’s key hubs for container, bulk, and automobile shipping.
-
E.
Evans Terminal
Evans Terminal is one of the passenger terminals at Detroit Metropolitan Wayne County Airport, serving as a major facility for airline operations and traveler services.
- 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 Engine Terminal Triple: [MBTA diesel locomotives, maintainedAt, Boston Engine Terminal]
Generated description
Boston Engine Terminal is a major Massachusetts Bay Transportation Authority maintenance and storage facility for its commuter rail locomotive fleet in Boston, Massachusetts.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Boston Engine Terminal Target entity description: Boston Engine Terminal is a major Massachusetts Bay Transportation Authority maintenance and storage facility for its commuter rail locomotive fleet in Boston, Massachusetts.
-
A.
Elizabeth Marine Terminal
Elizabeth Marine Terminal is a major container shipping port facility in Elizabeth, New Jersey, forming a key part of the Port of New York and New Jersey.
-
B.
Hound Point Terminal
Hound Point Terminal is a major crude oil loading facility located on the Firth of Forth in Scotland, serving as an important export terminal for North Sea oil.
-
C.
Packer Avenue Marine Terminal
Packer Avenue Marine Terminal is a major cargo and container handling facility within the Port of Philadelphia, serving as a key hub for international maritime trade on the U.S. East Coast.
-
D.
Dames Point Marine Terminal
Dames Point Marine Terminal is a major deepwater cargo facility in Jacksonville, Florida, serving as one of JAXPORT’s key hubs for container, bulk, and automobile shipping.
-
E.
Evans Terminal
Evans Terminal is one of the passenger terminals at Detroit Metropolitan Wayne County Airport, serving as a major facility for airline operations and traveler services.
- 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_69aed93de98c8190ad838ce507b77c8a |
completed | March 9, 2026, 2:29 p.m. |
| NER | Named-entity recognition | batch_69af030114c88190b725908a32ace750 |
completed | March 9, 2026, 5:27 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b589f5864881909c9fc787dd9b2341 |
completed | March 14, 2026, 4:16 p.m. |
| NEDg | Description generation | batch_69b58a81af5481908ad8fe2c7925cb99 |
completed | March 14, 2026, 4:19 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69b58b6ee40c8190a3e93f03a66df1b2 |
completed | March 14, 2026, 4:23 p.m. |
Created at: March 9, 2026, 3:45 p.m.