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.