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.