Triple
T5439301
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Castledawson |
E122091
|
entity |
| Predicate | historicalRailway |
P19012
|
FINISHED |
| Object |
Derry Central Railway
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.
|
E519318
|
NE FINISHED |
How this triple was built (5 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 | Statement: [Castledawson, historicalRailway, Derry Central Railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Derry Central Railway Context triple: [Castledawson, historicalRailway, Derry Central Railway]
-
A.
Belfast–Derry railway line
The Belfast–Derry railway line is a key Northern Ireland Railways route connecting Belfast with the city of Derry/Londonderry through several intermediate towns.
-
B.
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.
-
C.
Ballymena, Cushendall and Red Bay Railway
The Ballymena, Cushendall and Red Bay Railway was a narrow-gauge railway line in County Antrim, Northern Ireland, serving rural communities along the Antrim coast and inland from Ballymena.
-
D.
Belfast–Bangor line
The Belfast–Bangor line is a key suburban railway route in Northern Ireland connecting the city of Belfast with the coastal town of Bangor.
-
E.
Belfast–Dublin railway line
The Belfast–Dublin railway line is a major intercity rail corridor linking the capitals of Northern Ireland and the Republic of Ireland, serving key towns and cities along the east coast.
- 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: Derry Central Railway Triple: [Castledawson, historicalRailway, Derry Central Railway]
Generated description
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.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Derry Central Railway Target entity description: 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.
-
A.
Belfast–Derry railway line
The Belfast–Derry railway line is a key Northern Ireland Railways route connecting Belfast with the city of Derry/Londonderry through several intermediate towns.
-
B.
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.
-
C.
Ballymena, Cushendall and Red Bay Railway
The Ballymena, Cushendall and Red Bay Railway was a narrow-gauge railway line in County Antrim, Northern Ireland, serving rural communities along the Antrim coast and inland from Ballymena.
-
D.
Belfast–Bangor line
The Belfast–Bangor line is a key suburban railway route in Northern Ireland connecting the city of Belfast with the coastal town of Bangor.
-
E.
Belfast–Dublin railway line
The Belfast–Dublin railway line is a major intercity rail corridor linking the capitals of Northern Ireland and the Republic of Ireland, serving key towns and cities along the east coast.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: historicalRailway Context triple: [Castledawson, historicalRailway, Derry Central Railway]
-
A.
railwayHeritageFeature
Indicates that something is a feature associated with railway heritage, such as historically significant railway structures, equipment, or related elements.
-
B.
hasRailroadHistory
Indicates that an entity is associated with, involved in, or notable for historical events, operations, or developments related to railroads.
-
C.
hasRailroadHistoryWith
chosen
Indicates a historical relationship or connection between entities involving railroads, such as shared development, operation, or significant events in railway history.
-
D.
railwayFocus
Indicates that something is a primary subject, theme, or point of attention specifically in the context of railways or railway-related matters.
-
E.
formerRailwayLine
Indicates that a railway line previously existed in the past but is no longer in operation or has been decommissioned.
- F. None of above.
Provenance (6 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_69bd46400768819092925d461c0b8432 |
completed | March 20, 2026, 1:06 p.m. |
| NER | Named-entity recognition | batch_69bd922f66bc8190b7d47fd68d2fcf2e |
completed | March 20, 2026, 6:30 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69bf3ad3a3d88190bacde12f515d9971 |
completed | March 22, 2026, 12:41 a.m. |
| NEDg | Description generation | batch_69bf3ba6784081908b19717290b7ba3d |
completed | March 22, 2026, 12:45 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69bf3c1ad4d8819093aeb94f62eb1086 |
completed | March 22, 2026, 12:47 a.m. |
| PD | Predicate disambiguation | batch_69bd919aeb048190b786f814177d6cd9 |
completed | March 20, 2026, 6:27 p.m. |
Created at: March 20, 2026, 2:07 p.m.