Triple

T11134256
Position Surface form Disambiguated ID Type / Status
Subject Sapporo Municipal Subway E263370 entity
Predicate hasLine P35 FINISHED
Object Tozai Line
The Tozai Line is a major east–west rapid transit line forming part of the Sapporo Municipal Subway system in Sapporo, Japan.
 E1170991 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: Tozai Line | Statement: [Sapporo Municipal Subway, hasLine, Tozai Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tozai Line
Context triple: [Sapporo Municipal Subway, hasLine, Tozai Line]
  • A. 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.
  • B. Tōzai Line
    The Tōzai Line is an east–west rapid transit line forming part of the Kyoto Municipal Subway system in Kyoto, Japan.
  • C. Yotsubashi Line
    The Yotsubashi Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and serving key north–south corridors through the city.
  • D. Saikyō Line
    The Saikyō Line is a major JR East railway line in the Tokyo metropolitan area that connects central Tokyo with Saitama Prefecture, serving as a key commuter route.
  • E. Keio Line
    The Keio Line is a major private railway line in Tokyo, Japan, operated by Keio Corporation, connecting central Tokyo with its western suburbs.
  • 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: Tozai Line
Triple: [Sapporo Municipal Subway, hasLine, Tozai Line]
Generated description
The Tozai Line is a major east–west rapid transit line forming part of the Sapporo Municipal Subway system in Sapporo, Japan.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Tozai Line
Target entity description: The Tozai Line is a major east–west rapid transit line forming part of the Sapporo Municipal Subway system in Sapporo, Japan.
  • A. 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.
  • B. Tōzai Line
    The Tōzai Line is an east–west rapid transit line forming part of the Kyoto Municipal Subway system in Kyoto, Japan.
  • C. Yotsubashi Line
    The Yotsubashi Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and serving key north–south corridors through the city.
  • D. Saikyō Line
    The Saikyō Line is a major JR East railway line in the Tokyo metropolitan area that connects central Tokyo with Saitama Prefecture, serving as a key commuter route.
  • E. Keio Line
    The Keio Line is a major private railway line in Tokyo, Japan, operated by Keio Corporation, connecting central Tokyo with its western suburbs.
  • 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_69d6aa9c0ba08190bbd19c217489b755 completed April 8, 2026, 7:21 p.m.
NER Named-entity recognition batch_69d7e8347a248190837e8c26f25f553a completed April 9, 2026, 5:56 p.m.
NED1 Entity disambiguation (via context triple) batch_69ff6ebeb5ec8190afef40d87c74a8a0 completed May 9, 2026, 5:28 p.m.
NEDg Description generation batch_69ff702588908190a1b1dd1fd6a972f9 completed May 9, 2026, 5:34 p.m.
NED2 Entity disambiguation (via description) batch_69ff70f97eec8190a1f5affdad31f2b2 completed May 9, 2026, 5:38 p.m.
Created at: April 8, 2026, 9:28 p.m.