Triple

T19056991
Position Surface form Disambiguated ID Type / Status
Subject Vande Bharat Express E466422 entity
Predicate safetyFeature P642 FINISHED
Object Kavach train protection system
Kavach train protection system is an indigenous Indian automatic train protection technology designed to prevent collisions and enhance operational safety on the railway network.
 E1355954 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: Kavach train protection system | Statement: [Vande Bharat Express, safetyFeature, Kavach train protection system]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Kavach train protection system
Context triple: [Vande Bharat Express, safetyFeature, Kavach train protection system]
  • A. Tejas Express
    Tejas Express is a semi-high-speed, fully air-conditioned premium train service in India known for its modern onboard amenities and faster connectivity between major cities.
  • B. Vande Bharat Express
    Vande Bharat Express is a semi-high-speed, fully air-conditioned train service in India known for its modern design, onboard amenities, and faster intercity travel.
  • C. Train Protection & Warning System
    Train Protection & Warning System is a British railway safety system designed to automatically stop or slow trains to prevent collisions and signal passed at danger incidents.
  • D. Chinese Train Control System
    The Chinese Train Control System is a standardized, multi-level train control and signalling system used across China’s railways to ensure safe, efficient, and high-speed train operations.
  • E. Siemens Trainguard MT
    Siemens Trainguard MT is a communications-based train control (CBTC) signaling system developed by Siemens for fully automated and driverless metro and urban rail operations.
  • 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: Kavach train protection system
Triple: [Vande Bharat Express, safetyFeature, Kavach train protection system]
Generated description
Kavach train protection system is an indigenous Indian automatic train protection technology designed to prevent collisions and enhance operational safety on the railway network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Kavach train protection system
Target entity description: Kavach train protection system is an indigenous Indian automatic train protection technology designed to prevent collisions and enhance operational safety on the railway network.
  • A. Tejas Express
    Tejas Express is a semi-high-speed, fully air-conditioned premium train service in India known for its modern onboard amenities and faster connectivity between major cities.
  • B. Vande Bharat Express
    Vande Bharat Express is a semi-high-speed, fully air-conditioned train service in India known for its modern design, onboard amenities, and faster intercity travel.
  • C. Train Protection & Warning System
    Train Protection & Warning System is a British railway safety system designed to automatically stop or slow trains to prevent collisions and signal passed at danger incidents.
  • D. Chinese Train Control System
    The Chinese Train Control System is a standardized, multi-level train control and signalling system used across China’s railways to ensure safe, efficient, and high-speed train operations.
  • E. Siemens Trainguard MT
    Siemens Trainguard MT is a communications-based train control (CBTC) signaling system developed by Siemens for fully automated and driverless metro and urban rail operations.
  • 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_69d8dd040fb881909af2a964f65ad208 completed April 10, 2026, 11:20 a.m.
NER Named-entity recognition batch_69e5dc067f788190b3b149dfee370435 completed April 20, 2026, 7:55 a.m.
NED1 Entity disambiguation (via context triple) batch_6a05c5596cac8190bd83e77f5997644f completed May 14, 2026, 12:51 p.m.
NEDg Description generation batch_6a05c98f2fd08190b5b64567c7425c17 completed May 14, 2026, 1:09 p.m.
NED2 Entity disambiguation (via description) batch_6a05c9ed55f48190ab6352a49cae48da completed May 14, 2026, 1:11 p.m.
Created at: April 10, 2026, 12:03 p.m.