Triple

T1102243
Position Surface form Disambiguated ID Type / Status
Subject Tokyo Metro Fukutoshin Line E25404 entity
Predicate throughServiceWith P17741 FINISHED
Object Tobu Tojo Line
The Tobu Tojo Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting Ikebukuro in central Tokyo with suburban Saitama Prefecture.
E156031 NE FINISHED

How this triple was built (5 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: Tobu Tojo Line | Statement: [Tokyo Metro Fukutoshin Line, throughServiceWith, Tobu Tojo Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Tobu Tojo Line
Context triple: [Tokyo Metro Fukutoshin Line, throughServiceWith, Tobu Tojo Line]
  • A. Tokyu Den-en-toshi Line
    Tokyu Den-en-toshi Line is a major private railway line in the Tokyo metropolitan area that connects central Tokyo with suburban residential districts, including service to Shibuya.
  • B. Keio Inokashira Line
    The Keio Inokashira Line is a private railway line in Tokyo operated by Keio Corporation, connecting Shibuya with the western suburb of Kichijōji and serving several popular residential and commercial districts along the way.
  • 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. Tanimachi Line
    The Tanimachi Line is a major rapid transit line in Osaka, Japan, running north–south through the city as part of the Osaka Metro network.
  • E. Chuo Line
    The Chuo Line is a major rapid transit line in the Osaka Metro system that runs east–west through central Osaka, connecting key commercial and residential districts.
  • 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: Tobu Tojo Line
Triple: [Tokyo Metro Fukutoshin Line, throughServiceWith, Tobu Tojo Line]
Generated description
The Tobu Tojo Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting Ikebukuro in central Tokyo with suburban Saitama Prefecture.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Tobu Tojo Line
Target entity description: The Tobu Tojo Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting Ikebukuro in central Tokyo with suburban Saitama Prefecture.
  • A. Tokyu Den-en-toshi Line
    Tokyu Den-en-toshi Line is a major private railway line in the Tokyo metropolitan area that connects central Tokyo with suburban residential districts, including service to Shibuya.
  • B. Keio Inokashira Line
    The Keio Inokashira Line is a private railway line in Tokyo operated by Keio Corporation, connecting Shibuya with the western suburb of Kichijōji and serving several popular residential and commercial districts along the way.
  • 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. Tanimachi Line
    The Tanimachi Line is a major rapid transit line in Osaka, Japan, running north–south through the city as part of the Osaka Metro network.
  • E. Chuo Line
    The Chuo Line is a major rapid transit line in the Osaka Metro system that runs east–west through central Osaka, connecting key commercial and residential districts.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: throughServiceWith
Context triple: [Tokyo Metro Fukutoshin Line, throughServiceWith, Tobu Tojo Line]
  • A. isPassedThroughBy
    Indicates that something serves as a medium, route, or channel through which another thing moves, flows, or is transmitted.
  • B. serviceWith chosen
    Indicates that one entity provides or is associated with a particular service offered to or used by another entity.
  • C. implementedThrough
    Indicates that something is realized, carried out, or made operational by means of a specified method, mechanism, or intermediary.
  • D. servedByService
    Indicates that something is provided, handled, or fulfilled by a particular service.
  • E. hasServiceTo
    Indicates that one entity provides, offers, or operates a service for or directed toward another entity.
  • F. None of above.

Provenance (6 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_69a49428d4448190b3b36991ceae87ce completed March 1, 2026, 7:31 p.m.
NER Named-entity recognition batch_69a4b9c21c2c8190a34d91a7afed23a9 completed March 1, 2026, 10:12 p.m.
NED1 Entity disambiguation (via context triple) batch_69acce55b5748190b54b8205a735ae89 completed March 8, 2026, 1:18 a.m.
NEDg Description generation batch_69accf47541481909f2032cdf8e4272b completed March 8, 2026, 1:22 a.m.
NED2 Entity disambiguation (via description) batch_69accff8af488190a7580cf7c02ceed9 completed March 8, 2026, 1:25 a.m.
PD Predicate disambiguation batch_69a4b7472c848190b0643872f67084a2 completed March 1, 2026, 10:01 p.m.
Created at: March 1, 2026, 7:43 p.m.