Triple
T21079370
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Derry Central Railway |
E519318
|
entity |
| Predicate | operatedBy |
P86
|
FINISHED |
| Object | Derry Central Railway Company |
—
|
NE NERFINISHED |
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: Derry Central Railway Company | Statement: [Derry Central Railway, operatedBy, Derry Central Railway Company]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Derry Central Railway Company Context triple: [Derry Central Railway, operatedBy, Derry Central Railway Company]
-
A.
Derry Central Railway
chosen
Derry Central Railway was a former railway line in Northern Ireland that connected several towns in County Londonderry, playing a key role in regional transport during the late 19th and early 20th centuries.
-
B.
Ulster Railway
Ulster Railway was a 19th-century Irish railway company that operated key lines in the north of Ireland before becoming part of the Great Northern Railway (Ireland).
-
C.
Belfast and Northern Counties Railway
The Belfast and Northern Counties Railway was a former railway company in Northern Ireland that operated an extensive network in the north and northwest, linking Belfast with key towns and ports including Derry.
-
D.
Belfast and County Down Railway
The Belfast and County Down Railway was a former railway company in what is now Northern Ireland that operated lines radiating from Belfast into County Down during the late 19th and early 20th centuries.
-
E.
Downpatrick and County Down Railway
Downpatrick and County Down Railway is a heritage railway in Northern Ireland that preserves and operates historic trains along restored lines around Downpatrick.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69e0b506e59c8190849b71ed07929215 |
completed | April 16, 2026, 10:08 a.m. |
| NER | Named-entity recognition | batch_69e702d939e08190a37d7b7cc1872ad5 |
completed | April 21, 2026, 4:53 a.m. |
Created at: April 16, 2026, 2:49 p.m.