Triple

T9269949
Position Surface form Disambiguated ID Type / Status
Subject European Train Control System E222798 entity
Predicate hasLevel P2393 FINISHED
Object ETCS Level 3
ETCS Level 3 is an advanced, moving-block train control standard that enables continuous train integrity supervision and higher line capacity within the European Train Control System.
 E790241 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 Level 3 | Statement: [European Train Control System, hasLevel, ETCS Level 3]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: ETCS Level 3
Context triple: [European Train Control System, hasLevel, ETCS Level 3]
  • 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. CTCS-3
    CTCS-3 is a high-level Chinese Train Control System standard used for advanced, high-speed railway signaling and train operation control.
  • C. 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.
  • D. ETCS Level 0
    ETCS Level 0 is the baseline operating mode in the European Train Control System in which trains run without continuous ETCS supervision, typically relying on existing national signalling systems.
  • 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: ETCS Level 3
Triple: [European Train Control System, hasLevel, ETCS Level 3]
Generated description
ETCS Level 3 is an advanced, moving-block train control standard that enables continuous train integrity supervision and higher line capacity within the European Train Control System.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: ETCS Level 3
Target entity description: ETCS Level 3 is an advanced, moving-block train control standard that enables continuous train integrity supervision and higher line capacity within the European Train Control System.
  • 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. CTCS-3
    CTCS-3 is a high-level Chinese Train Control System standard used for advanced, high-speed railway signaling and train operation control.
  • C. 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.
  • D. ETCS Level 0
    ETCS Level 0 is the baseline operating mode in the European Train Control System in which trains run without continuous ETCS supervision, typically relying on existing national signalling systems.
  • 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_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_69d0b1ecfadc81909adf95fbbc77c389 completed April 4, 2026, 6:38 a.m.
NEDg Description generation batch_69d0b3f4bb6c819082d3f801ad88304f completed April 4, 2026, 6:47 a.m.
NED2 Entity disambiguation (via description) batch_69d0b4b8131c8190b2aa8be56925b7bc completed April 4, 2026, 6:50 a.m.
Created at: March 30, 2026, 7:33 p.m.