Triple
T17118568
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | M200 series trains |
E415403
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object |
Metropolitan Area Transport Ltd
Metropolitan Area Transport Ltd is a public transit company responsible for operating the M200 series trains within its metropolitan rail network.
|
E1250909
|
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: Metropolitan Area Transport Ltd | Statement: [M200 series trains, operator, Metropolitan Area Transport Ltd]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Metropolitan Area Transport Ltd Context triple: [M200 series trains, operator, Metropolitan Area Transport Ltd]
-
A.
London Underground Limited
London Underground Limited is the company responsible for operating and managing the London Underground metro network.
-
B.
London Passenger Transport Board
The London Passenger Transport Board was the public body that managed and coordinated most of the capital’s bus, tram, trolleybus, and underground rail services in London from the 1930s until the late 1940s.
-
C.
London Transport Board
The London Transport Board was the public body responsible for operating and overseeing most of the public transport system in Greater London from the early 1960s until the creation of the Greater London Council’s transport authority.
-
D.
Underground Electric Railways Company of London
The Underground Electric Railways Company of London was the early 20th-century holding company that developed and operated much of London's deep-level tube network, forming the core of what became the London Underground.
-
E.
Transport for London
Transport for London is the local government body responsible for managing and overseeing the public transport network and major roads in Greater London.
- 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: Metropolitan Area Transport Ltd Triple: [M200 series trains, operator, Metropolitan Area Transport Ltd]
Generated description
Metropolitan Area Transport Ltd is a public transit company responsible for operating the M200 series trains within its metropolitan rail network.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Metropolitan Area Transport Ltd Target entity description: Metropolitan Area Transport Ltd is a public transit company responsible for operating the M200 series trains within its metropolitan rail network.
-
A.
London Underground Limited
London Underground Limited is the company responsible for operating and managing the London Underground metro network.
-
B.
London Passenger Transport Board
The London Passenger Transport Board was the public body that managed and coordinated most of the capital’s bus, tram, trolleybus, and underground rail services in London from the 1930s until the late 1940s.
-
C.
London Transport Board
The London Transport Board was the public body responsible for operating and overseeing most of the public transport system in Greater London from the early 1960s until the creation of the Greater London Council’s transport authority.
-
D.
Underground Electric Railways Company of London
The Underground Electric Railways Company of London was the early 20th-century holding company that developed and operated much of London's deep-level tube network, forming the core of what became the London Underground.
-
E.
Transport for London
Transport for London is the local government body responsible for managing and overseeing the public transport network and major roads in Greater London.
- 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_69d886d090cc8190a39cb94992586905 |
completed | April 10, 2026, 5:12 a.m. |
| NER | Named-entity recognition | batch_69e3e8086a388190a655a044feccab14 |
completed | April 18, 2026, 8:22 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a013a0e11108190bfcf858142aa9ff3 |
completed | May 11, 2026, 2:08 a.m. |
| NEDg | Description generation | batch_6a013b749680819097159f0fdc379f2c |
completed | May 11, 2026, 2:14 a.m. |
| NED2 | Entity disambiguation (via description) | batch_6a013bf9ef508190aac1155680f33eaf |
completed | May 11, 2026, 2:16 a.m. |
Created at: April 10, 2026, 5:35 a.m.