Triple
T3468
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Fitchburg Line |
E65
|
entity |
| Predicate | terminus |
P388
|
FINISHED |
| Object |
Fitchburg
Fitchburg is a small city in north-central Massachusetts known for its industrial history, hilly terrain, and role as a regional rail hub.
|
E38842
|
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: Fitchburg | Statement: [MBTA Fitchburg Line, terminus, Fitchburg]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Fitchburg Context triple: [MBTA Fitchburg Line, terminus, Fitchburg]
-
A.
Framingham
Framingham is a suburban city in eastern Massachusetts known for its residential communities, retail centers, and location along major routes west of Boston.
-
B.
Brockton, Massachusetts
Brockton, Massachusetts is a mid-sized city in Plymouth County known historically as a major shoe manufacturing center and sometimes called the "City of Champions" for its successful boxers and sports legacy.
-
C.
Springfield, Massachusetts
Springfield, Massachusetts is a historic city in western Massachusetts known as the birthplace of basketball and a former industrial and transportation hub along the Connecticut River.
-
D.
Holyoke, Massachusetts
Holyoke, Massachusetts is a historic industrial city in western Massachusetts known for its early planned mill town design and significant role in the paper manufacturing industry.
-
E.
Northampton, Massachusetts
Northampton, Massachusetts is a small New England city known for its vibrant arts scene, progressive politics, and home to Smith College.
- 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: Fitchburg Triple: [MBTA Fitchburg Line, terminus, Fitchburg]
Generated description
Fitchburg is a small city in north-central Massachusetts known for its industrial history, hilly terrain, and role as a regional rail hub.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Fitchburg Target entity description: Fitchburg is a small city in north-central Massachusetts known for its industrial history, hilly terrain, and role as a regional rail hub.
-
A.
Framingham
Framingham is a suburban city in eastern Massachusetts known for its residential communities, retail centers, and location along major routes west of Boston.
-
B.
Brockton, Massachusetts
Brockton, Massachusetts is a mid-sized city in Plymouth County known historically as a major shoe manufacturing center and sometimes called the "City of Champions" for its successful boxers and sports legacy.
-
C.
Springfield, Massachusetts
Springfield, Massachusetts is a historic city in western Massachusetts known as the birthplace of basketball and a former industrial and transportation hub along the Connecticut River.
-
D.
Holyoke, Massachusetts
Holyoke, Massachusetts is a historic industrial city in western Massachusetts known for its early planned mill town design and significant role in the paper manufacturing industry.
-
E.
Northampton, Massachusetts
Northampton, Massachusetts is a small New England city known for its vibrant arts scene, progressive politics, and home to Smith College.
- 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_69a238d6b47881909e68288aed2fd858 |
completed | Feb. 28, 2026, 12:37 a.m. |
| NER | Named-entity recognition | batch_69a23ff0650c8190bea8724de0343e58 |
completed | Feb. 28, 2026, 1:08 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a3ab97ff188190b41423bc252137fa |
completed | March 1, 2026, 2:59 a.m. |
| NEDg | Description generation | batch_69a3ad480f588190a8901dffb7371e5e |
completed | March 1, 2026, 3:06 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a3ad9f6b10819081274e51eac79b00 |
completed | March 1, 2026, 3:08 a.m. |
Created at: Feb. 28, 2026, 12:40 a.m.