Triple

T9269975
Position Surface form Disambiguated ID Type / Status
Subject European Train Control System E222798 entity
Predicate documentation P4310 FINISHED
Object ETCS System Requirements Specification
The ETCS System Requirements Specification is the core technical document that defines the functional, performance, and interoperability requirements for the European Train Control System used across European railways.
E222798 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: ETCS System Requirements Specification | Statement: [European Train Control System, documentation, ETCS System Requirements Specification]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: ETCS System Requirements Specification
Context triple: [European Train Control System, documentation, ETCS System Requirements Specification]
  • A. ETCS Level 2
    ETCS Level 2 is an advanced European train control and signalling standard that enables continuous, cab-based train supervision and high-speed, high-capacity railway operations.
  • B. European Train Control System
    The European Train Control System (ETCS) is a standardized, interoperable train signaling and control system used across Europe and in high-speed railways worldwide to enhance safety and efficiency.
  • C. CBTC
    CBTC (Communications-Based Train Control) is an advanced railway signalling system that uses continuous, high-capacity data communication to manage train movements with greater safety and efficiency.
  • D. CGS-EMU system
    The CGS-EMU system is a variant of the centimeter–gram–second (CGS) system of units that uses the electromagnetic (EMU) subsystem for electrical and magnetic quantities, including the gauss as a unit of magnetic flux density.
  • E. 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.
  • 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: ETCS System Requirements Specification
Triple: [European Train Control System, documentation, ETCS System Requirements Specification]
Generated description
The ETCS System Requirements Specification is the core technical document that defines the functional, performance, and interoperability requirements for the European Train Control System used across European railways.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: ETCS System Requirements Specification
Target entity description: The ETCS System Requirements Specification is the core technical document that defines the functional, performance, and interoperability requirements for the European Train Control System used across European railways.
  • A. ETCS Level 2
    ETCS Level 2 is an advanced European train control and signalling standard that enables continuous, cab-based train supervision and high-speed, high-capacity railway operations.
  • B. European Train Control System chosen
    The European Train Control System (ETCS) is a standardized, interoperable train signaling and control system used across Europe and in high-speed railways worldwide to enhance safety and efficiency.
  • C. CBTC
    CBTC (Communications-Based Train Control) is an advanced railway signalling system that uses continuous, high-capacity data communication to manage train movements with greater safety and efficiency.
  • D. CGS-EMU system
    The CGS-EMU system is a variant of the centimeter–gram–second (CGS) system of units that uses the electromagnetic (EMU) subsystem for electrical and magnetic quantities, including the gauss as a unit of magnetic flux density.
  • E. 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.
  • 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_69ca841ffe208190aa7bcffbef2f8379 completed March 30, 2026, 2:09 p.m.
NER Named-entity recognition batch_69cd078525308190abfb883123742d3f completed April 1, 2026, 11:54 a.m.
NED1 Entity disambiguation (via context triple) batch_69d09c2ca500819083ef4aa37f3e3a7f completed April 4, 2026, 5:05 a.m.
NEDg Description generation batch_69d09d5047e8819082dbb2e44547b41c completed April 4, 2026, 5:10 a.m.
NED2 Entity disambiguation (via description) batch_69d09dec544c819095e2109d5e1671d3 completed April 4, 2026, 5:13 a.m.
Created at: March 30, 2026, 7:33 p.m.