Triple

T796846
Position Surface form Disambiguated ID Type / Status
Subject Dubai Metro E17040 entity
Predicate signallingSystem P19148 FINISHED
Object CBTC
CBTC (Communications-Based Train Control) is an advanced railway signaling system that uses continuous, high-capacity data communication between trains and track equipment to enable safer, more efficient, and higher-frequency train operations.
E27668 NE FINISHED

How this triple was built (5 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: CBTC | Statement: [Dubai Metro, signallingSystem, CBTC]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: CBTC
Context triple: [Dubai Metro, signallingSystem, CBTC]
  • A. Automatic Train Control
    Automatic Train Control is a railway safety and control system that automates train operations such as speed regulation and braking to prevent collisions and ensure safe, efficient train movement.
  • B. Positive Train Control
    Positive Train Control is an advanced, federally mandated train safety technology designed to automatically prevent collisions, overspeed derailments, and other dangerous train movements.
  • C. C train
    The C train is a local service on the New York City Subway’s Eighth Avenue Line, running primarily between Upper Manhattan and Brooklyn.
  • D. B train
    The B train is a New York City Subway service that runs on the IND Sixth Avenue Line, providing weekday express service in Manhattan and Brooklyn.
  • E. MARC Train
    MARC Train is a commuter rail service operating in Maryland and the surrounding region, connecting cities such as Washington, D.C., Baltimore, and Martinsburg.
  • 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: CBTC
Triple: [Dubai Metro, signallingSystem, CBTC]
Generated description
CBTC (Communications-Based Train Control) is an advanced railway signaling system that uses continuous, high-capacity data communication between trains and track equipment to enable safer, more efficient, and higher-frequency train operations.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: CBTC
Target entity description: CBTC (Communications-Based Train Control) is an advanced railway signaling system that uses continuous, high-capacity data communication between trains and track equipment to enable safer, more efficient, and higher-frequency train operations.
  • A. Automatic Train Control chosen
    Automatic Train Control is a railway safety and control system that automates train operations such as speed regulation and braking to prevent collisions and ensure safe, efficient train movement.
  • B. Positive Train Control
    Positive Train Control is an advanced, federally mandated train safety technology designed to automatically prevent collisions, overspeed derailments, and other dangerous train movements.
  • C. C train
    The C train is a local service on the New York City Subway’s Eighth Avenue Line, running primarily between Upper Manhattan and Brooklyn.
  • D. B train
    The B train is a New York City Subway service that runs on the IND Sixth Avenue Line, providing weekday express service in Manhattan and Brooklyn.
  • E. MARC Train
    MARC Train is a commuter rail service operating in Maryland and the surrounding region, connecting cities such as Washington, D.C., Baltimore, and Martinsburg.
  • F. None of above.
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: signallingSystem
Context triple: [Dubai Metro, signallingSystem, CBTC]
  • A. telecommunicationSystem
    Indicates a relationship where communication between entities is carried out over a distance using electronic or digital transmission systems.
  • B. signalType
    Indicates the specific kind or category of signal associated with or used by an entity or interaction.
  • C. usesSignaling
    Indicates that one entity communicates or coordinates with another by emitting, transmitting, or interpreting signals.
  • D. callSignType
    Indicates the classification or category of a call sign associated with an entity or communication.
  • E. notationSystem
    Indicates a relationship where one entity is the system or method of notation used to represent or encode another entity.
  • F. None of above. chosen

Provenance (7 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_69a49378b9c48190adbf5f62e5b7aca1 completed March 1, 2026, 7:28 p.m.
NER Named-entity recognition batch_69a4a7b172e88190a26d31c9075b81fb completed March 1, 2026, 8:55 p.m.
NED1 Entity disambiguation (via context triple) batch_69a67f01cca881908c1d230048be1225 completed March 3, 2026, 6:26 a.m.
NEDg Description generation batch_69a6800b410881909d95ab4c3612b501 completed March 3, 2026, 6:30 a.m.
NED2 Entity disambiguation (via description) batch_69a680bae34481909255d07f325d97d4 completed March 3, 2026, 6:33 a.m.
PD Predicate disambiguation batch_69a4a5122a008190b0c621b7bc588d41 completed March 1, 2026, 8:44 p.m.
PDg Predicate description generation batch_69a4a5bed20c81909ecc28bf42594e72 completed March 1, 2026, 8:46 p.m.
Created at: March 1, 2026, 7:38 p.m.