Triple

T5173067
Position Surface form Disambiguated ID Type / Status
Subject River Brent E116730 entity
Predicate associatedWith P37 FINISHED
Object Brent Reservoir (Welsh Harp)
Brent Reservoir, commonly known as the Welsh Harp, is a large artificial lake and nature reserve in northwest London renowned for its wildlife, sailing, and recreational activities.
 E499386 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: Brent Reservoir (Welsh Harp) | Statement: [River Brent, associatedWith, Brent Reservoir (Welsh Harp)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Brent Reservoir (Welsh Harp)
Context triple: [River Brent, associatedWith, Brent Reservoir (Welsh Harp)]
  • A. Claerwen Reservoir
    Claerwen Reservoir is a large upland water reservoir in mid Wales, known for its impressive dam and scenic surroundings within the Elan Valley.
  • B. Clywedog Reservoir
    Clywedog Reservoir is a large man-made lake in mid-Wales, created for water regulation and recreation amid scenic upland surroundings.
  • C. Garreg Ddu Reservoir
    Garreg Ddu Reservoir is a scenic man-made lake in the Elan Valley of mid-Wales, known for its distinctive submerged dam and role in supplying water to the city of Birmingham.
  • D. Pen-y-garreg Reservoir
    Pen-y-garreg Reservoir is a scenic man-made lake in the Elan Valley of mid Wales, known for its historic stone dam and role in the region’s water supply system.
  • E. Howden Reservoir
    Howden Reservoir is a large man-made lake in Derbyshire’s Peak District, known as part of the Upper Derwent Valley chain of reservoirs supplying water to nearby cities and popular for its scenic surroundings and outdoor recreation.
  • 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: Brent Reservoir (Welsh Harp)
Triple: [River Brent, associatedWith, Brent Reservoir (Welsh Harp)]
Generated description
Brent Reservoir, commonly known as the Welsh Harp, is a large artificial lake and nature reserve in northwest London renowned for its wildlife, sailing, and recreational activities.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Brent Reservoir (Welsh Harp)
Target entity description: Brent Reservoir, commonly known as the Welsh Harp, is a large artificial lake and nature reserve in northwest London renowned for its wildlife, sailing, and recreational activities.
  • A. Claerwen Reservoir
    Claerwen Reservoir is a large upland water reservoir in mid Wales, known for its impressive dam and scenic surroundings within the Elan Valley.
  • B. Clywedog Reservoir
    Clywedog Reservoir is a large man-made lake in mid-Wales, created for water regulation and recreation amid scenic upland surroundings.
  • C. Garreg Ddu Reservoir
    Garreg Ddu Reservoir is a scenic man-made lake in the Elan Valley of mid-Wales, known for its distinctive submerged dam and role in supplying water to the city of Birmingham.
  • D. Pen-y-garreg Reservoir
    Pen-y-garreg Reservoir is a scenic man-made lake in the Elan Valley of mid Wales, known for its historic stone dam and role in the region’s water supply system.
  • E. Howden Reservoir
    Howden Reservoir is a large man-made lake in Derbyshire’s Peak District, known as part of the Upper Derwent Valley chain of reservoirs supplying water to nearby cities and popular for its scenic surroundings and outdoor recreation.
  • 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_69bd445ff97c81909a2615cc56235470 completed March 20, 2026, 12:58 p.m.
NER Named-entity recognition batch_69bd795252a481908634779f3f656574 completed March 20, 2026, 4:44 p.m.
NED1 Entity disambiguation (via context triple) batch_69bed9471b4881909c8436853818a8a0 completed March 21, 2026, 5:45 p.m.
NEDg Description generation batch_69bed9f3624c8190b9d22fa0594dd767 completed March 21, 2026, 5:48 p.m.
NED2 Entity disambiguation (via description) batch_69beda5d39b88190a7314f673de2719d completed March 21, 2026, 5:50 p.m.
Created at: March 20, 2026, 1:45 p.m.