Triple

T4021714

Position	Surface form	Disambiguated ID	Type / Status
Subject	Turnu-Severin	`E91292`	entity
Predicate	nearbyInfrastructure	`P2064`	FINISHED
Object	Iron Gate I Hydroelectric Power Station Iron Gate I Hydroelectric Power Station is a major hydroelectric dam and power plant on the Danube River, jointly operated by Romania and Serbia and known as one of the largest such facilities in Europe.	`E409893`	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: Iron Gate I Hydroelectric Power Station | Statement: [Turnu-Severin, nearbyInfrastructure, Iron Gate I Hydroelectric Power Station]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Iron Gate I Hydroelectric Power Station
Context triple: [Turnu-Severin, nearbyInfrastructure, Iron Gate I Hydroelectric Power Station]

A. Istra hydroelectric dam
The Istra hydroelectric dam is a power-generating and water-regulating structure associated with the Istrinskoye Reservoir in the Moscow region of Russia.
B. Iron Gate Dam
Iron Gate Dam is a hydroelectric and water-storage dam on the Klamath River in northern California, known for its role in regional power generation and its involvement in major river restoration and dam removal efforts.
C. Ivankovo Hydroelectric Station
Ivankovo Hydroelectric Station is a major Soviet-era hydroelectric power plant on the Volga River in Russia, forming part of the Upper Volga cascade and supplying electricity as well as regulating water levels for navigation and water management.
D. Svetogorsk hydropower plant
Svetogorsk hydropower plant is a hydroelectric power station located on the Vuoksi River in Russia, generating electricity by harnessing the river’s flow.
E. Plavinas Hydroelectric Power Plant
Plavinas Hydroelectric Power Plant is one of the largest hydroelectric power stations in the Baltic region, located in Latvia and serving as a major source of renewable electricity.
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: Iron Gate I Hydroelectric Power Station
Triple: [Turnu-Severin, nearbyInfrastructure, Iron Gate I Hydroelectric Power Station]

Generated description

Iron Gate I Hydroelectric Power Station is a major hydroelectric dam and power plant on the Danube River, jointly operated by Romania and Serbia and known as one of the largest such facilities in Europe.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Iron Gate I Hydroelectric Power Station
Target entity description: Iron Gate I Hydroelectric Power Station is a major hydroelectric dam and power plant on the Danube River, jointly operated by Romania and Serbia and known as one of the largest such facilities in Europe.

A. Istra hydroelectric dam
The Istra hydroelectric dam is a power-generating and water-regulating structure associated with the Istrinskoye Reservoir in the Moscow region of Russia.
B. Iron Gate Dam
Iron Gate Dam is a hydroelectric and water-storage dam on the Klamath River in northern California, known for its role in regional power generation and its involvement in major river restoration and dam removal efforts.
C. Ivankovo Hydroelectric Station
Ivankovo Hydroelectric Station is a major Soviet-era hydroelectric power plant on the Volga River in Russia, forming part of the Upper Volga cascade and supplying electricity as well as regulating water levels for navigation and water management.
D. Svetogorsk hydropower plant
Svetogorsk hydropower plant is a hydroelectric power station located on the Vuoksi River in Russia, generating electricity by harnessing the river’s flow.
E. Plavinas Hydroelectric Power Plant
Plavinas Hydroelectric Power Plant is one of the largest hydroelectric power stations in the Baltic region, located in Latvia and serving as a major source of renewable electricity.
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_69aed9618b04819081750d979d2af098`	completed	March 9, 2026, 2:29 p.m.
NER	Named-entity recognition	`batch_69aefacb4c208190b8dd595a534850b2`	completed	March 9, 2026, 4:52 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69b562922a8c8190b4090f734c11cebb`	completed	March 14, 2026, 1:28 p.m.
NEDg	Description generation	`batch_69b5633103e081909dbe7a7e54877343`	completed	March 14, 2026, 1:31 p.m.
NED2	Entity disambiguation (via description)	`batch_69b563eca17c81908deff0d361a7be87`	completed	March 14, 2026, 1:34 p.m.

Created at: March 9, 2026, 3:35 p.m.