Triple

T6631819
Position Surface form Disambiguated ID Type / Status
Subject Lazarevac E149941 entity
Predicate hasCompany P1287 FINISHED
Object RB Kolubara (Kolubara Mining Basin company)
RB Kolubara (Kolubara Mining Basin company) is a major Serbian coal mining and energy company that operates large open-pit lignite mines and supplies a significant portion of the country’s electricity production.
 E602757 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: RB Kolubara (Kolubara Mining Basin company) | Statement: [Lazarevac, hasCompany, RB Kolubara (Kolubara Mining Basin company)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: RB Kolubara (Kolubara Mining Basin company)
Context triple: [Lazarevac, hasCompany, RB Kolubara (Kolubara Mining Basin company)]
  • A. PKP S.A.
    PKP S.A. is Poland’s state-owned railway company responsible for managing much of the country’s rail infrastructure and related assets.
  • B. ArcelorMittal Zenica steelworks
    ArcelorMittal Zenica steelworks is a major integrated steel production facility in Zenica, Bosnia and Herzegovina, operated by the global steel company ArcelorMittal.
  • C. U. S. Steel Košice
    U. S. Steel Košice is a large integrated steel production plant in Košice, Slovakia, operated by United States Steel Corporation and serving as one of Central Europe’s key steel manufacturers.
  • D. KGHM Polska Miedź
    KGHM Polska Miedź is a major Polish state-controlled mining and metallurgy company, and one of the world’s leading producers of copper and silver.
  • E. Energodar
    Energodar is a Ukrainian city best known for hosting the Zaporizhzhia Nuclear Power Plant, the largest nuclear power station in Europe.
  • 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: RB Kolubara (Kolubara Mining Basin company)
Triple: [Lazarevac, hasCompany, RB Kolubara (Kolubara Mining Basin company)]
Generated description
RB Kolubara (Kolubara Mining Basin company) is a major Serbian coal mining and energy company that operates large open-pit lignite mines and supplies a significant portion of the country’s electricity production.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: RB Kolubara (Kolubara Mining Basin company)
Target entity description: RB Kolubara (Kolubara Mining Basin company) is a major Serbian coal mining and energy company that operates large open-pit lignite mines and supplies a significant portion of the country’s electricity production.
  • A. PKP S.A.
    PKP S.A. is Poland’s state-owned railway company responsible for managing much of the country’s rail infrastructure and related assets.
  • B. ArcelorMittal Zenica steelworks
    ArcelorMittal Zenica steelworks is a major integrated steel production facility in Zenica, Bosnia and Herzegovina, operated by the global steel company ArcelorMittal.
  • C. U. S. Steel Košice
    U. S. Steel Košice is a large integrated steel production plant in Košice, Slovakia, operated by United States Steel Corporation and serving as one of Central Europe’s key steel manufacturers.
  • D. KGHM Polska Miedź
    KGHM Polska Miedź is a major Polish state-controlled mining and metallurgy company, and one of the world’s leading producers of copper and silver.
  • E. Energodar
    Energodar is a Ukrainian city best known for hosting the Zaporizhzhia Nuclear Power Plant, the largest nuclear power station in Europe.
  • 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_69c687ee50048190aa151765bef16193 completed March 27, 2026, 1:36 p.m.
NER Named-entity recognition batch_69c6afa6e52c8190943c86660da23c75 completed March 27, 2026, 4:26 p.m.
NED1 Entity disambiguation (via context triple) batch_69c6cbeef9f48190aea2e97a1f8735ee completed March 27, 2026, 6:26 p.m.
NEDg Description generation batch_69c6cdc0a90c81909ed2b661320135b3 completed March 27, 2026, 6:34 p.m.
NED2 Entity disambiguation (via description) batch_69c6ce71bbfc8190801017bde36effcf completed March 27, 2026, 6:37 p.m.
Created at: March 27, 2026, 1:59 p.m.