Triple

T7496994
Position Surface form Disambiguated ID Type / Status
Subject Tobu Nikko Line E177154 entity
Predicate isInTransportCategory P70905 FINISHED
Object Tobu Railway lines
Tobu Railway lines are a network of private railway routes in the Greater Tokyo area of Japan operated by Tobu Railway, serving both commuter and intercity passengers.
 E185891 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: Tobu Railway lines | Statement: [Tobu Nikko Line, isInTransportCategory, Tobu Railway lines]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tobu Railway lines
Context triple: [Tobu Nikko Line, isInTransportCategory, Tobu Railway lines]
  • A. 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.
  • B. Tobu Nikko Line
    The Tobu Nikko Line is a private railway line in Japan operated by Tobu Railway that connects the Tokyo area with the historic and scenic Nikko region in Tochigi Prefecture.
  • C. Tobu Isesaki Line
    The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
  • D. Tobu Railway
    Tobu Railway is a major private railway company in Japan that operates extensive rail networks in the Greater Tokyo area and surrounding regions.
  • E. 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.
  • 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 Railway lines
Triple: [Tobu Nikko Line, isInTransportCategory, Tobu Railway lines]
Generated description
Tobu Railway lines are a network of private railway routes in the Greater Tokyo area of Japan operated by Tobu Railway, serving both commuter and intercity passengers.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Tobu Railway lines
Target entity description: Tobu Railway lines are a network of private railway routes in the Greater Tokyo area of Japan operated by Tobu Railway, serving both commuter and intercity passengers.
  • A. 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.
  • B. Tobu Nikko Line
    The Tobu Nikko Line is a private railway line in Japan operated by Tobu Railway that connects the Tokyo area with the historic and scenic Nikko region in Tochigi Prefecture.
  • C. Tobu Isesaki Line
    The Tobu Isesaki Line is a major private railway line in the Greater Tokyo area operated by Tobu Railway, connecting central Tokyo with Saitama and Gunma Prefectures.
  • D. Tobu Railway chosen
    Tobu Railway is a major private railway company in Japan that operates extensive rail networks in the Greater Tokyo area and surrounding regions.
  • E. 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.
  • F. None of above.

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_69c69f2583808190bd1a4936c42a5815 completed March 27, 2026, 3:15 p.m.
NER Named-entity recognition batch_69c6f5963d98819098275b161848d2d4 completed March 27, 2026, 9:24 p.m.
NED1 Entity disambiguation (via context triple) batch_69c846043ed48190b6fa45ed0e70b4d3 completed March 28, 2026, 9:20 p.m.
NEDg Description generation batch_69c846fb17d88190a515bf2226c1747d completed March 28, 2026, 9:24 p.m.
NED2 Entity disambiguation (via description) batch_69c8477874588190abeb0d31ce78c489 completed March 28, 2026, 9:26 p.m.
Created at: March 27, 2026, 3:44 p.m.