Triple

T5707722
Position Surface form Disambiguated ID Type / Status
Subject Chiltern Railways E125825 entity
Predicate rollingStockType P1305 FINISHED
Object Class 68 locomotive
The Class 68 locomotive is a modern British diesel-electric locomotive used for passenger and freight services, known for its high performance, reliability, and distinctive angular design.
E540224 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: Class 68 locomotive | Statement: [Chiltern Railways, rollingStockType, Class 68 locomotive]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Class 68 locomotive
Context triple: [Chiltern Railways, rollingStockType, Class 68 locomotive]
  • A. ACS-64 locomotives
    ACS-64 locomotives are modern electric locomotives built by Siemens for Amtrak, designed for high-speed passenger service on the electrified portions of the U.S. Northeast Corridor.
  • B. USRA 2-8-8-2 articulated locomotive
    The USRA 2-8-8-2 articulated locomotive was a heavy freight steam engine design developed under the United States Railroad Administration during World War I, known for its powerful compound articulated configuration used by multiple American railroads.
  • C. USRA 2-6-6-2 articulated locomotive
    The USRA 2-6-6-2 articulated locomotive was a standardized World War I–era American steam freight engine featuring a Mallet-type articulated wheel arrangement designed for heavy, slow freight service on steep grades and curving track.
  • D. EMD GP9 locomotive
    The EMD GP9 locomotive is a widely used four-axle diesel-electric road switcher built in the 1950s that became one of North America's most successful and versatile freight and passenger locomotives.
  • E. EMD GP7 locomotive
    The EMD GP7 locomotive is a widely used four-axle diesel-electric road switcher introduced in the late 1940s that helped usher in the transition from steam to diesel power on North American railroads.
  • 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: Class 68 locomotive
Triple: [Chiltern Railways, rollingStockType, Class 68 locomotive]
Generated description
The Class 68 locomotive is a modern British diesel-electric locomotive used for passenger and freight services, known for its high performance, reliability, and distinctive angular design.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Class 68 locomotive
Target entity description: The Class 68 locomotive is a modern British diesel-electric locomotive used for passenger and freight services, known for its high performance, reliability, and distinctive angular design.
  • A. ACS-64 locomotives
    ACS-64 locomotives are modern electric locomotives built by Siemens for Amtrak, designed for high-speed passenger service on the electrified portions of the U.S. Northeast Corridor.
  • B. USRA 2-8-8-2 articulated locomotive
    The USRA 2-8-8-2 articulated locomotive was a heavy freight steam engine design developed under the United States Railroad Administration during World War I, known for its powerful compound articulated configuration used by multiple American railroads.
  • C. USRA 2-6-6-2 articulated locomotive
    The USRA 2-6-6-2 articulated locomotive was a standardized World War I–era American steam freight engine featuring a Mallet-type articulated wheel arrangement designed for heavy, slow freight service on steep grades and curving track.
  • D. EMD GP9 locomotive
    The EMD GP9 locomotive is a widely used four-axle diesel-electric road switcher built in the 1950s that became one of North America's most successful and versatile freight and passenger locomotives.
  • E. EMD GP7 locomotive
    The EMD GP7 locomotive is a widely used four-axle diesel-electric road switcher introduced in the late 1940s that helped usher in the transition from steam to diesel power on North American railroads.
  • 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_69c0082d6fe48190b777fb383769e5c8 completed March 22, 2026, 3:18 p.m.
NER Named-entity recognition batch_69c024892fd88190a91133fc88365410 completed March 22, 2026, 5:19 p.m.
NED1 Entity disambiguation (via context triple) batch_69c05a6c17608190a9a808c2c77d937c completed March 22, 2026, 9:09 p.m.
NEDg Description generation batch_69c05b7c3bd48190ad8303bf1bb3ec6a completed March 22, 2026, 9:13 p.m.
NED2 Entity disambiguation (via description) batch_69c05c22c31081909a9a67d99e7c728c completed March 22, 2026, 9:16 p.m.
Created at: March 22, 2026, 3:45 p.m.