Triple

T21889859
Position Surface form Disambiguated ID Type / Status
Subject Kelani Ganga E540509 entity
Predicate hasHydropowerPlant P15311 FINISHED
Object Polpitiya Power Station
Polpitiya Power Station is a hydroelectric power plant in Sri Lanka that harnesses the flow of the Kelani River to generate electricity for the national grid.
 E1507874 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: Polpitiya Power Station | Statement: [Kelani Ganga, hasHydropowerPlant, Polpitiya Power Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Polpitiya Power Station
Context triple: [Kelani Ganga, hasHydropowerPlant, Polpitiya Power Station]
  • A. Liapootah Power Station
    Liapootah Power Station is a hydroelectric power facility in Tasmania, Australia, that forms part of the state's extensive Derwent River power scheme.
  • B. Ohaaki Power Station
    Ohaaki Power Station is a geothermal power plant in New Zealand that generates electricity by harnessing heat from the Taupō Volcanic Zone.
  • C. Aratiatia Power Station
    Aratiatia Power Station is a hydroelectric power station on New Zealand’s Waikato River, known for its dam-controlled Aratiatia Rapids, which are periodically released as a tourist attraction.
  • D. Wayatinah Power Station
    Wayatinah Power Station is a hydroelectric power facility in Tasmania, Australia, that generates electricity using water from the Derwent River system.
  • E. Nymboida Power Station
    Nymboida Power Station is a small hydroelectric power plant in New South Wales, Australia, that generates electricity using water from the Nymboida River.
  • 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: Polpitiya Power Station
Triple: [Kelani Ganga, hasHydropowerPlant, Polpitiya Power Station]
Generated description
Polpitiya Power Station is a hydroelectric power plant in Sri Lanka that harnesses the flow of the Kelani River to generate electricity for the national grid.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Polpitiya Power Station
Target entity description: Polpitiya Power Station is a hydroelectric power plant in Sri Lanka that harnesses the flow of the Kelani River to generate electricity for the national grid.
  • A. Liapootah Power Station
    Liapootah Power Station is a hydroelectric power facility in Tasmania, Australia, that forms part of the state's extensive Derwent River power scheme.
  • B. Ohaaki Power Station
    Ohaaki Power Station is a geothermal power plant in New Zealand that generates electricity by harnessing heat from the Taupō Volcanic Zone.
  • C. Aratiatia Power Station
    Aratiatia Power Station is a hydroelectric power station on New Zealand’s Waikato River, known for its dam-controlled Aratiatia Rapids, which are periodically released as a tourist attraction.
  • D. Wayatinah Power Station
    Wayatinah Power Station is a hydroelectric power facility in Tasmania, Australia, that generates electricity using water from the Derwent River system.
  • E. Nymboida Power Station
    Nymboida Power Station is a small hydroelectric power plant in New South Wales, Australia, that generates electricity using water from the Nymboida River.
  • 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_69e0c47a95908190ae3e19b716accb3d completed April 16, 2026, 11:14 a.m.
NER Named-entity recognition batch_69f118ef2b648190bbd78f6b3958d2ee completed April 28, 2026, 8:30 p.m.
NED1 Entity disambiguation (via context triple) batch_6a0a59ff38c881908efb4cc5840242a8 completed May 18, 2026, 12:14 a.m.
NEDg Description generation batch_6a0a5b34e1948190868859eae050ed22 completed May 18, 2026, 12:20 a.m.
NED2 Entity disambiguation (via description) batch_6a0a5bce1c388190aa0149fab353f30f completed May 18, 2026, 12:22 a.m.
Created at: April 16, 2026, 7:06 p.m.