Triple
T3014495
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Commuter Rail Lowell Line |
E82302
|
entity |
| Predicate | historicalPredecessor |
P97
|
FINISHED |
| Object | Boston and Lowell Railroad |
E81016
|
NE FINISHED |
How this triple was built (2 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 and Lowell Railroad | Statement: [MBTA Commuter Rail Lowell Line, historicalPredecessor, Boston and Lowell Railroad]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Boston and Lowell Railroad Context triple: [MBTA Commuter Rail Lowell Line, historicalPredecessor, Boston and Lowell Railroad]
-
A.
Boston and Lowell Railroad
chosen
The Boston and Lowell Railroad was a 19th-century New England railway company that operated a key line between Boston and Lowell, Massachusetts, and later became part of larger regional rail systems.
-
B.
Boston and Worcester Railroad
The Boston and Worcester Railroad was one of the early 19th-century rail lines in Massachusetts that connected Boston with the inland city of Worcester, helping spur regional industrial and suburban development.
-
C.
Fitchburg Railroad
The Fitchburg Railroad was a historic New England rail line that operated across Massachusetts and into Vermont, later becoming part of the Boston and Maine Railroad system.
-
D.
New England Central Railroad
New England Central Railroad is a regional freight railroad operating primarily in New England, providing vital rail connections between local industries and the broader North American rail network.
-
E.
Providence and Worcester Railroad
Providence and Worcester Railroad is a regional freight railroad operating in southern New England, primarily serving industrial and commercial customers in Rhode Island, Massachusetts, Connecticut, and New York.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69ad8b1eb53481908c39bbcd1ec104b2 |
completed | March 8, 2026, 2:43 p.m. |
| NER | Named-entity recognition | batch_69ad9a69e8148190a97507740c9d26a8 |
completed | March 8, 2026, 3:48 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b20f3d2fc481908365a171d8dac0df |
completed | March 12, 2026, 12:56 a.m. |
Created at: March 8, 2026, 3 p.m.