Triple

T3374509
Position Surface form Disambiguated ID Type / Status
Subject Blackfriars station E71034 entity
Predicate undergroundNetwork P41500 FINISHED
Object London Underground E9036 NE FINISHED

How this triple was built (3 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: London Underground | Statement: [Blackfriars station, undergroundNetwork, London Underground]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: London Underground
Context triple: [Blackfriars station, undergroundNetwork, London Underground]
  • A. London Underground chosen
    The London Underground is a rapid transit system serving Greater London and surrounding areas, famous as one of the world's oldest and most extensive metro networks.
  • B. London Overground
    London Overground is a suburban rail network in London that connects outer districts and some central hubs using a mix of newly built and former National Rail lines, integrated into the city’s public transport system.
  • C. District Railway
    The District Railway was a historic London underground railway company that developed much of what is now the District line, helping to form the core of the city's early subterranean transport network.
  • D. London Underground Metropolitan line
    The London Underground Metropolitan line is one of the network’s oldest and longest lines, running from central London into the north-west suburbs and beyond into Buckinghamshire.
  • E. 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.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: undergroundNetwork
Context triple: [Blackfriars station, undergroundNetwork, London Underground]
  • A. undergroundBranch
    Indicates that one entity is a branch or extension of another that operates or exists in a hidden, secret, or non-public manner.
  • B. hasUndergroundConnections chosen
    Indicates that one entity is linked to another through subterranean or hidden passageways, networks, or channels.
  • C. undergroundAlternateCommandCenter
    Indicates a facility serving as a backup or secondary command center that is located underground.
  • D. subterranean
    Indicates that one entity is located beneath the surface of the ground or under another structure or area.
  • E. hasUndergroundDepth
    Indicates that one entity has a specified vertical extent or depth located below the ground surface relative to another reference or context.
  • F. None of above.

Provenance (4 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_69ad85a7f80c8190a05e43013f298942 completed March 8, 2026, 2:20 p.m.
NER Named-entity recognition batch_69adb2bf4ad88190a2c49dc30f323a13 completed March 8, 2026, 5:32 p.m.
NED1 Entity disambiguation (via context triple) batch_69b5335421348190a18cb74cdd885c82 completed March 14, 2026, 10:07 a.m.
PD Predicate disambiguation batch_69ada433059881908e46f38cc5f40a32 completed March 8, 2026, 4:30 p.m.
Created at: March 8, 2026, 3:13 p.m.