Triple

T17011546
Position Surface form Disambiguated ID Type / Status
Subject Roihupelto depot E412711 entity
Predicate servesOperator P5884 FINISHED
Object Helsinki Metro rolling stock
Helsinki Metro rolling stock consists of the trains used to operate the Helsinki Metro system, including multiple generations of electric multiple units designed for urban rapid transit in the Helsinki region.
E1246152 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: Helsinki Metro rolling stock | Statement: [Roihupelto depot, servesOperator, Helsinki Metro rolling stock]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Helsinki Metro rolling stock
Context triple: [Roihupelto depot, servesOperator, Helsinki Metro rolling stock]
  • A. E-series metro trains
    E-series metro trains are an earlier generation of Soviet-designed electric multiple units that served as a foundational model for later metro rolling stock across various Eastern European and former Soviet cities.
  • B. Metro EMU
    Metro EMU is a type of electric multiple unit specifically designed for high-frequency urban metro and rapid transit rail services.
  • C. Tokyo Metro Hanzomon Line rolling stock
    Tokyo Metro Hanzomon Line rolling stock refers to the electric multiple unit train types operated on Tokyo’s Hanzomon Line, including models such as the Tokyo Metro 08 series.
  • D. Copenhagen S-train 4th generation trains
    Copenhagen S-train 4th generation trains are a series of electric multiple units used on Copenhagen’s suburban rail network, known for their modern design, high frequency operation, and role as the backbone of the S-train system.
  • E. Amsterdam Metro rolling stock fleet
    The Amsterdam Metro rolling stock fleet comprises the various train types and series used to operate metro services across the Amsterdam rapid transit network.
  • 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: Helsinki Metro rolling stock
Triple: [Roihupelto depot, servesOperator, Helsinki Metro rolling stock]
Generated description
Helsinki Metro rolling stock consists of the trains used to operate the Helsinki Metro system, including multiple generations of electric multiple units designed for urban rapid transit in the Helsinki region.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Helsinki Metro rolling stock
Target entity description: Helsinki Metro rolling stock consists of the trains used to operate the Helsinki Metro system, including multiple generations of electric multiple units designed for urban rapid transit in the Helsinki region.
  • A. E-series metro trains
    E-series metro trains are an earlier generation of Soviet-designed electric multiple units that served as a foundational model for later metro rolling stock across various Eastern European and former Soviet cities.
  • B. Metro EMU
    Metro EMU is a type of electric multiple unit specifically designed for high-frequency urban metro and rapid transit rail services.
  • C. Tokyo Metro Hanzomon Line rolling stock
    Tokyo Metro Hanzomon Line rolling stock refers to the electric multiple unit train types operated on Tokyo’s Hanzomon Line, including models such as the Tokyo Metro 08 series.
  • D. Copenhagen S-train 4th generation trains
    Copenhagen S-train 4th generation trains are a series of electric multiple units used on Copenhagen’s suburban rail network, known for their modern design, high frequency operation, and role as the backbone of the S-train system.
  • E. Amsterdam Metro rolling stock fleet
    The Amsterdam Metro rolling stock fleet comprises the various train types and series used to operate metro services across the Amsterdam rapid transit network.
  • 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_69d886cc4170819093deddc7b8b4b6a7 completed April 10, 2026, 5:12 a.m.
NER Named-entity recognition batch_69e3d47cc17c819087f7bd27582bcbfa completed April 18, 2026, 6:59 p.m.
NED1 Entity disambiguation (via context triple) batch_6a011b46e89c81908271eb22b535c558 completed May 10, 2026, 11:56 p.m.
NEDg Description generation batch_6a011c99c3948190ac3d3d9059dbb57e completed May 11, 2026, 12:02 a.m.
NED2 Entity disambiguation (via description) batch_6a011d4b53d081909781235ded1c2b35 completed May 11, 2026, 12:05 a.m.
Created at: April 10, 2026, 5:33 a.m.