Triple

T8542913
Position Surface form Disambiguated ID Type / Status
Subject Janney coupler E202239 entity
Predicate hasVariant P455 FINISHED
Object AAR Type H tightlock coupler
The AAR Type H tightlock coupler is a specialized railway coupling system designed to provide secure, close-coupled, and stable connections between passenger railcars, enhancing safety and ride quality.
 E202239 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: AAR Type H tightlock coupler | Statement: [Janney coupler, hasVariant, AAR Type H tightlock coupler]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: AAR Type H tightlock coupler
Context triple: [Janney coupler, hasVariant, AAR Type H tightlock coupler]
  • A. Dellner automatic couplers
    Dellner automatic couplers are railway vehicle coupling systems designed to automatically connect and disconnect train units, commonly used on modern multiple-unit fleets such as the Bombardier Voyager family.
  • B. Scharfenberg coupler
    The Scharfenberg coupler is an automatic railway coupling system widely used on modern passenger trains to quickly connect and disconnect cars while integrating mechanical, pneumatic, and electrical links.
  • C. Janney coupler
    The Janney coupler is a widely used automatic railway coupling system designed to securely connect train cars while improving safety and ease of operation compared to earlier link-and-pin couplers.
  • D. Shibata-type coupler
    The Shibata-type coupler is a Japanese-designed automatic railway coupling system widely used on electric multiple units for reliable and efficient train connection.
  • E. Westinghouse air brake system
    The Westinghouse air brake system is a pioneering railway braking technology that greatly improved the safety and control of trains by using compressed air to apply brakes simultaneously across all cars.
  • 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: AAR Type H tightlock coupler
Triple: [Janney coupler, hasVariant, AAR Type H tightlock coupler]
Generated description
The AAR Type H tightlock coupler is a specialized railway coupling system designed to provide secure, close-coupled, and stable connections between passenger railcars, enhancing safety and ride quality.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: AAR Type H tightlock coupler
Target entity description: The AAR Type H tightlock coupler is a specialized railway coupling system designed to provide secure, close-coupled, and stable connections between passenger railcars, enhancing safety and ride quality.
  • A. Dellner automatic couplers
    Dellner automatic couplers are railway vehicle coupling systems designed to automatically connect and disconnect train units, commonly used on modern multiple-unit fleets such as the Bombardier Voyager family.
  • B. Scharfenberg coupler
    The Scharfenberg coupler is an automatic railway coupling system widely used on modern passenger trains to quickly connect and disconnect cars while integrating mechanical, pneumatic, and electrical links.
  • C. Janney coupler chosen
    The Janney coupler is a widely used automatic railway coupling system designed to securely connect train cars while improving safety and ease of operation compared to earlier link-and-pin couplers.
  • D. Shibata-type coupler
    The Shibata-type coupler is a Japanese-designed automatic railway coupling system widely used on electric multiple units for reliable and efficient train connection.
  • E. Westinghouse air brake system
    The Westinghouse air brake system is a pioneering railway braking technology that greatly improved the safety and control of trains by using compressed air to apply brakes simultaneously across all cars.
  • F. None of above.

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_69ca832461e88190a654c5e44e233aa8 completed March 30, 2026, 2:05 p.m.
NER Named-entity recognition batch_69cbe6e26be48190b10bc62fad178dad completed March 31, 2026, 3:23 p.m.
NED1 Entity disambiguation (via context triple) batch_69cea86036a881909cd1744cdb5b7a7f completed April 2, 2026, 5:33 p.m.
NEDg Description generation batch_69cea9cff1ec8190a0093fb42782341e completed April 2, 2026, 5:39 p.m.
NED2 Entity disambiguation (via description) batch_69ceaa9f7f8c8190965e86880ff141d5 completed April 2, 2026, 5:42 p.m.
Created at: March 30, 2026, 6:18 p.m.