Triple

T333004
Position Surface form Disambiguated ID Type / Status
Subject Severn E6663 entity
Predicate hasCrossing P416 FINISHED
Object Severn Tunnel
Severn Tunnel is a major railway tunnel in the United Kingdom that runs beneath the River Severn, linking South West England with South Wales.
E46960 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: Severn Tunnel | Statement: [Severn, hasCrossing, Severn Tunnel]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Severn Tunnel
Context triple: [Severn, hasCrossing, Severn Tunnel]
  • A. Channel Tunnel
    The Channel Tunnel is a 50-kilometer undersea rail tunnel linking the United Kingdom and France, serving as a major passenger and freight transport route between the two countries.
  • B. Long Bridge
    Long Bridge is a major railroad bridge over the Potomac River in Washington, D.C., carrying freight and passenger trains between the District of Columbia and Virginia.
  • C. Thelwall Viaduct
    Thelwall Viaduct is a major motorway bridge in north-west England that carries the M6 over the River Mersey and surrounding waterways near Warrington.
  • D. Barton Swing Aqueduct
    Barton Swing Aqueduct is a pioneering movable navigable aqueduct in Greater Manchester, England, that carries the Bridgewater Canal over the Manchester Ship Canal by swinging aside to allow large ships to pass.
  • E. Manchester Ship Canal
    The Manchester Ship Canal is a major 19th-century inland waterway in northwest England that enabled ocean-going ships to reach the industrial city of Manchester from the Irish Sea.
  • 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: Severn Tunnel
Triple: [Severn, hasCrossing, Severn Tunnel]
Generated description
Severn Tunnel is a major railway tunnel in the United Kingdom that runs beneath the River Severn, linking South West England with South Wales.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Severn Tunnel
Target entity description: Severn Tunnel is a major railway tunnel in the United Kingdom that runs beneath the River Severn, linking South West England with South Wales.
  • A. Channel Tunnel
    The Channel Tunnel is a 50-kilometer undersea rail tunnel linking the United Kingdom and France, serving as a major passenger and freight transport route between the two countries.
  • B. Long Bridge
    Long Bridge is a major railroad bridge over the Potomac River in Washington, D.C., carrying freight and passenger trains between the District of Columbia and Virginia.
  • C. Thelwall Viaduct
    Thelwall Viaduct is a major motorway bridge in north-west England that carries the M6 over the River Mersey and surrounding waterways near Warrington.
  • D. Barton Swing Aqueduct
    Barton Swing Aqueduct is a pioneering movable navigable aqueduct in Greater Manchester, England, that carries the Bridgewater Canal over the Manchester Ship Canal by swinging aside to allow large ships to pass.
  • E. Manchester Ship Canal
    The Manchester Ship Canal is a major 19th-century inland waterway in northwest England that enabled ocean-going ships to reach the industrial city of Manchester from the Irish Sea.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: hasCrossing
Context triple: [Severn, hasCrossing, Severn Tunnel]
  • A. crossedBy chosen
    Indicates that one entity (typically a path, line, or boundary) is intersected or traversed by another entity.
  • B. crossesBetween
    Indicates that one entity passes from one side of a second entity to the other, traversing the space between two reference points or boundaries associated with that second entity.
  • C. hasCrossColor
    Indicates that an entity possesses a cross-shaped marking or pattern of a specified color.
  • D. crossesSectionOf
    Indicates that one entity passes through or over a specific segment or portion of another entity.
  • E. hasAtGradeCrossingNearby
    Indicates that one entity (typically a location or segment) has a nearby at-grade crossing where two transportation paths intersect at the same level.
  • F. None of above.

Provenance (6 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_69a2e79434908190a9d5afe415153ad9 completed Feb. 28, 2026, 1:03 p.m.
NER Named-entity recognition batch_69a2eac4d9d081908a624464e450fb0e completed Feb. 28, 2026, 1:16 p.m.
NED1 Entity disambiguation (via context triple) batch_69a3eca3d2f08190a0d4008cfb000f4f completed March 1, 2026, 7:37 a.m.
NEDg Description generation batch_69a3ee6e5d688190bc4e5cee8014ca4d completed March 1, 2026, 7:44 a.m.
NED2 Entity disambiguation (via description) batch_69a3ef1206148190a0cbc9ebfa943f06 completed March 1, 2026, 7:47 a.m.
PD Predicate disambiguation batch_69a2e94d99cc8190a112e4b630ec63c1 completed Feb. 28, 2026, 1:10 p.m.
Created at: Feb. 28, 2026, 1:08 p.m.