Triple

T10857125
Position Surface form Disambiguated ID Type / Status
Subject British Rail Class 37 E256295 entity
Predicate operator P179 FINISHED
Object Colas Rail
Colas Rail is a UK-based rail freight and infrastructure company that provides track maintenance, engineering, and logistics services across the British railway network.
 E889005 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: Colas Rail | Statement: [British Rail Class 37, operator, Colas Rail]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Colas Rail
Context triple: [British Rail Class 37, operator, Colas Rail]
  • A. Systra
    Systra is a global engineering and consulting firm specializing in mass transit and rail infrastructure projects.
  • B. UGL Rail
    UGL Rail is an Australian engineering and rail services company that designs, manufactures, and maintains rolling stock and rail infrastructure.
  • C. Railtrack
    Railtrack was the former private owner and operator of most of Britain’s railway infrastructure, which was later replaced by the publicly owned Network Rail after financial and safety controversies.
  • D. Serco Caledonian Sleepers Limited
    Serco Caledonian Sleepers Limited is a UK-based rail company that operates overnight sleeper train services between London and Scotland under the Caledonian Sleeper brand.
  • E. John Holland Rail
    John Holland Rail is an Australian rail infrastructure company responsible for operating and maintaining significant portions of the railway network in New South Wales.
  • 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: Colas Rail
Triple: [British Rail Class 37, operator, Colas Rail]
Generated description
Colas Rail is a UK-based rail freight and infrastructure company that provides track maintenance, engineering, and logistics services across the British railway network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Colas Rail
Target entity description: Colas Rail is a UK-based rail freight and infrastructure company that provides track maintenance, engineering, and logistics services across the British railway network.
  • A. Systra
    Systra is a global engineering and consulting firm specializing in mass transit and rail infrastructure projects.
  • B. UGL Rail
    UGL Rail is an Australian engineering and rail services company that designs, manufactures, and maintains rolling stock and rail infrastructure.
  • C. Railtrack
    Railtrack was the former private owner and operator of most of Britain’s railway infrastructure, which was later replaced by the publicly owned Network Rail after financial and safety controversies.
  • D. Serco Caledonian Sleepers Limited
    Serco Caledonian Sleepers Limited is a UK-based rail company that operates overnight sleeper train services between London and Scotland under the Caledonian Sleeper brand.
  • E. John Holland Rail
    John Holland Rail is an Australian rail infrastructure company responsible for operating and maintaining significant portions of the railway network in New South Wales.
  • 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_69d6aa83d1448190a66d93c32394d21f completed April 8, 2026, 7:20 p.m.
NER Named-entity recognition batch_69d7513695ac8190b5812e977a422c37 completed April 9, 2026, 7:11 a.m.
NED1 Entity disambiguation (via context triple) batch_69deb197808c8190b1c80aeb2144a909 completed April 14, 2026, 9:28 p.m.
NEDg Description generation batch_69dec25660dc8190a4444a1099e7e40c completed April 14, 2026, 10:40 p.m.
NED2 Entity disambiguation (via description) batch_69dec7cdcd988190bb6508838bea48de completed April 14, 2026, 11:03 p.m.
Created at: April 8, 2026, 9:20 p.m.