Triple

T11831842
Position Surface form Disambiguated ID Type / Status
Subject Sendai Subway E281409 entity
Predicate openedLine P990 FINISHED
Object Sendai Subway Namboku Line — NE NERFINISHED

How this triple was built (3 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: Sendai Subway Namboku Line | Statement: [Sendai Subway, openedLine, Sendai Subway Namboku Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Sendai Subway Namboku Line
Context triple: [Sendai Subway, openedLine, Sendai Subway Namboku Line]
  • A. Sendai Subway Tōzai Line
    The Sendai Subway Tōzai Line is an east–west rapid transit line in Sendai, Japan, connecting key districts across the city as part of its urban subway network.
  • B. Sendai Subway
    Sendai Subway is an urban rapid transit system serving the city of Sendai in Japan, providing key north–south and east–west rail connections across the metropolitan area.
  • C. Tozai Line
    The Tozai Line is a major east–west rapid transit line forming part of the Sapporo Municipal Subway system in Sapporo, Japan.
  • D. Tozai Line
    The Tozai Line is a major Tokyo Metro subway line that runs east–west across Tokyo, connecting central business districts with suburban residential areas.
  • E. JR Saikyo Line
    The JR Saikyo Line is a major commuter rail line in the Tokyo metropolitan area operated by JR East, connecting central Tokyo with Saitama Prefecture and serving key hubs such as Shibuya and Shinjuku.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Sendai Subway Namboku Line
Target entity description: The Sendai Subway Namboku Line is a north–south rapid transit line serving the city of Sendai in Miyagi Prefecture, Japan.
  • A. Sendai Subway Tōzai Line
    The Sendai Subway Tōzai Line is an east–west rapid transit line in Sendai, Japan, connecting key districts across the city as part of its urban subway network.
  • B. Sendai Subway chosen
    Sendai Subway is an urban rapid transit system serving the city of Sendai in Japan, providing key north–south and east–west rail connections across the metropolitan area.
  • C. Tozai Line
    The Tozai Line is a major east–west rapid transit line forming part of the Sapporo Municipal Subway system in Sapporo, Japan.
  • D. Tozai Line
    The Tozai Line is a major Tokyo Metro subway line that runs east–west across Tokyo, connecting central business districts with suburban residential areas.
  • E. JR Saikyo Line
    The JR Saikyo Line is a major commuter rail line in the Tokyo metropolitan area operated by JR East, connecting central Tokyo with Saitama Prefecture and serving key hubs such as Shibuya and Shinjuku.
  • F. None of above.

Provenance (2 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_69d6ab276f8c8190b1966a0ef11349ac completed April 8, 2026, 7:23 p.m.
NER Named-entity recognition batch_69d8a62c95988190a45dbaa7001c8846 completed April 10, 2026, 7:26 a.m.
Created at: April 8, 2026, 9:43 p.m.