Triple

T20316185
Position Surface form Disambiguated ID Type / Status
Subject BR Derby Works E510384 entity
Predicate designed P184 FINISHED
Object British Rail Class 125 DMU
The British Rail Class 125 DMU was a high-speed diesel multiple unit built in the late 1950s for intensive suburban services on the Great Northern route out of London King's Cross.
 E1447910 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: British Rail Class 125 DMU | Statement: [BR Derby Works, designed, British Rail Class 125 DMU]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: British Rail Class 125 DMU
Context triple: [BR Derby Works, designed, British Rail Class 125 DMU]
  • A. British Rail Class 121 DMU
    The British Rail Class 121 DMU is a type of single-car diesel multiple unit introduced in the late 1950s for suburban and branch line services on the British railway network.
  • B. British Rail Class 120 DMU
    The British Rail Class 120 DMU was a class of cross-country diesel multiple units introduced in the late 1950s for long-distance services on British Rail’s Western and Scottish Regions.
  • C. British Rail Class 117 DMU
    The British Rail Class 117 DMU is a type of first-generation diesel multiple unit built for suburban and regional passenger services on British Rail from the late 1950s.
  • D. British Rail Class 116 DMU
    The British Rail Class 116 DMU is a type of first-generation diesel multiple unit built for suburban and commuter services on the British railway network in the late 1950s and 1960s.
  • E. British Rail Class 118 DMU
    The British Rail Class 118 DMU was a type of first-generation diesel multiple unit built for suburban and regional passenger services on British Rail in the mid-20th century.
  • 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: British Rail Class 125 DMU
Triple: [BR Derby Works, designed, British Rail Class 125 DMU]
Generated description
The British Rail Class 125 DMU was a high-speed diesel multiple unit built in the late 1950s for intensive suburban services on the Great Northern route out of London King's Cross.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: British Rail Class 125 DMU
Target entity description: The British Rail Class 125 DMU was a high-speed diesel multiple unit built in the late 1950s for intensive suburban services on the Great Northern route out of London King's Cross.
  • A. British Rail Class 121 DMU
    The British Rail Class 121 DMU is a type of single-car diesel multiple unit introduced in the late 1950s for suburban and branch line services on the British railway network.
  • B. British Rail Class 120 DMU
    The British Rail Class 120 DMU was a class of cross-country diesel multiple units introduced in the late 1950s for long-distance services on British Rail’s Western and Scottish Regions.
  • C. British Rail Class 117 DMU
    The British Rail Class 117 DMU is a type of first-generation diesel multiple unit built for suburban and regional passenger services on British Rail from the late 1950s.
  • D. British Rail Class 116 DMU
    The British Rail Class 116 DMU is a type of first-generation diesel multiple unit built for suburban and commuter services on the British railway network in the late 1950s and 1960s.
  • E. British Rail Class 118 DMU
    The British Rail Class 118 DMU was a type of first-generation diesel multiple unit built for suburban and regional passenger services on British Rail in the mid-20th century.
  • 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_69e0b4c7491c8190961113c4283b10b0 completed April 16, 2026, 10:07 a.m.
NER Named-entity recognition batch_69e67787af188190bc32a3049c9c5b39 completed April 20, 2026, 6:59 p.m.
NED1 Entity disambiguation (via context triple) batch_6a08e8202e748190a043ac51dc8faa01 completed May 16, 2026, 9:56 p.m.
NEDg Description generation batch_6a08e88b1e1c8190a02a52e50470ce79 completed May 16, 2026, 9:58 p.m.
NED2 Entity disambiguation (via description) batch_6a08e923a134819082e8d677c420f8ce completed May 16, 2026, 10:01 p.m.
Created at: April 16, 2026, 11:19 a.m.