Triple

T11831826
Position Surface form Disambiguated ID Type / Status
Subject Sendai Subway E281409 entity
Predicate hasLine P35 FINISHED
Object 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.
 E1355202 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: Sendai Subway Tōzai Line | Statement: [Sendai Subway, hasLine, Sendai Subway Tōzai Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Sendai Subway Tōzai Line
Context triple: [Sendai Subway, hasLine, Sendai Subway Tōzai Line]
  • A. Tozai Line
    The Tozai Line is a major east–west rapid transit line forming part of the Sapporo Municipal Subway system in Sapporo, Japan.
  • B. 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.
  • C. Tokyo Metro Tozai Line
    The Tokyo Metro Tozai Line is a major east–west subway line in Tokyo that connects central business districts with residential suburbs and offers through-services onto several private railway lines.
  • D. Tōzai Line
    The Tōzai Line is an east–west rapid transit line forming part of the Kyoto Municipal Subway system in Kyoto, Japan.
  • E. Seibu Haijima Line
    The Seibu Haijima Line is a commuter railway line in the western Tokyo area of Japan, forming part of the Seibu Railway network and connecting suburban communities with major transit hubs.
  • 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: Sendai Subway Tōzai Line
Triple: [Sendai Subway, hasLine, Sendai Subway Tōzai Line]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Sendai Subway Tōzai Line
Target entity description: 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.
  • A. Tozai Line
    The Tozai Line is a major east–west rapid transit line forming part of the Sapporo Municipal Subway system in Sapporo, Japan.
  • B. 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.
  • C. Tokyo Metro Tozai Line
    The Tokyo Metro Tozai Line is a major east–west subway line in Tokyo that connects central business districts with residential suburbs and offers through-services onto several private railway lines.
  • D. Tōzai Line
    The Tōzai Line is an east–west rapid transit line forming part of the Kyoto Municipal Subway system in Kyoto, Japan.
  • E. Seibu Haijima Line
    The Seibu Haijima Line is a commuter railway line in the western Tokyo area of Japan, forming part of the Seibu Railway network and connecting suburban communities with major transit hubs.
  • 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_69d6ab276f8c8190b1966a0ef11349ac completed April 8, 2026, 7:23 p.m.
NER Named-entity recognition batch_69d8a62c95988190a45dbaa7001c8846 completed April 10, 2026, 7:26 a.m.
NED1 Entity disambiguation (via context triple) batch_6a05be3406888190bd3f8deea269be20 completed May 14, 2026, 12:21 p.m.
NEDg Description generation batch_6a05bffc6c548190ae746c901b1f121c completed May 14, 2026, 12:28 p.m.
NED2 Entity disambiguation (via description) batch_6a05c0521b0481909ae61b887e1461cf completed May 14, 2026, 12:30 p.m.
Created at: April 8, 2026, 9:43 p.m.