Triple

T9865482
Position Surface form Disambiguated ID Type / Status
Subject Pen-y-garreg Reservoir E239821 entity
Predicate partOf P40 FINISHED
Object Elan Valley Reservoirs E233870 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Elan Valley Reservoirs | Statement: [Pen-y-garreg Reservoir, partOf, Elan Valley Reservoirs]

Disambiguation candidates (1 decision)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Elan Valley Reservoirs
Context triple: [Pen-y-garreg Reservoir, partOf, Elan Valley Reservoirs]
  • A. Elan Valley reservoirs chosen
    The Elan Valley reservoirs are a series of scenic man-made lakes in mid-Wales, created in the late 19th and early 20th centuries to supply water to Birmingham and now renowned for their dams, wildlife, and outdoor recreation.
  • B. Gryffe Reservoirs
    Gryffe Reservoirs are a pair of man-made water storage lakes in Renfrewshire, Scotland, that serve as an important local water supply and recreational area near the village of Bridge of Weir.
  • C. Bonaly Reservoir
    Bonaly Reservoir is a man-made upland water body in the Pentland Hills near Edinburgh, popular for walking, wildlife, and scenic views.
  • D. Chew Valley reservoirs
    Chew Valley reservoirs are a series of man-made lakes in North Somerset, England, known for supplying drinking water and providing important habitats for wildlife and recreational activities such as birdwatching and fishing.
  • E. Fernilee Reservoir
    Fernilee Reservoir is a scenic man-made lake in the Goyt Valley in Derbyshire, England, popular for walking, wildlife, and outdoor recreation.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69ca84e7506c819095cbde4ff16512bb elicitation completed
NER batch_69cdb3ba7f288190a15ebec2cc3112c4 ner completed
NED1 batch_69d1e44dc0b8819082294a479299814e ned_source_triple completed
Created at: March 30, 2026, 8:36 p.m.