Triple

T9942852
Position Surface form Disambiguated ID Type / Status
Subject Tokyo Metropolitan Bureau of Transportation E194125 entity
Predicate operates P24 FINISHED
Object Toei Streetcar (Toden Arakawa Line)
The Toei Streetcar (Toden Arakawa Line) is one of Tokyo’s last remaining traditional tram lines, running through older residential neighborhoods and offering a nostalgic, slower-paced alternative to the city’s modern rail network.
E832693 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: Toei Streetcar (Toden Arakawa Line) | Statement: [Tokyo Metropolitan Bureau of Transportation, operates, Toei Streetcar (Toden Arakawa Line)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Toei Streetcar (Toden Arakawa Line)
Context triple: [Tokyo Metropolitan Bureau of Transportation, operates, Toei Streetcar (Toden Arakawa Line)]
  • A. Toei Asakusa Line
    The Toei Asakusa Line is a major Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, connecting central Tokyo with surrounding areas and offering through-services to several private railway lines.
  • B. Tokyu Setagaya Line
    The Tokyu Setagaya Line is a light rail/tram line in Tokyo, Japan, operated by Tokyu Corporation and known for connecting Sangen-Jaya with the Setagaya area along a short, mostly street-level route.
  • C. Toei Oedo Line
    The Toei Oedo Line is a major Tokyo subway loop and radial line operated by the Tokyo Metropolitan Bureau of Transportation, connecting central districts with many key commercial and residential areas.
  • D. 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.
  • E. Seibu Toshima Line
    The Seibu Toshima Line is a short commuter railway line in Tokyo, Japan, operated by Seibu Railway and connecting Nerima and Toshimaen in the city’s northwest.
  • 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: Toei Streetcar (Toden Arakawa Line)
Triple: [Tokyo Metropolitan Bureau of Transportation, operates, Toei Streetcar (Toden Arakawa Line)]
Generated description
The Toei Streetcar (Toden Arakawa Line) is one of Tokyo’s last remaining traditional tram lines, running through older residential neighborhoods and offering a nostalgic, slower-paced alternative to the city’s modern rail network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Toei Streetcar (Toden Arakawa Line)
Target entity description: The Toei Streetcar (Toden Arakawa Line) is one of Tokyo’s last remaining traditional tram lines, running through older residential neighborhoods and offering a nostalgic, slower-paced alternative to the city’s modern rail network.
  • A. Toei Asakusa Line
    The Toei Asakusa Line is a major Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, connecting central Tokyo with surrounding areas and offering through-services to several private railway lines.
  • B. Tokyu Setagaya Line
    The Tokyu Setagaya Line is a light rail/tram line in Tokyo, Japan, operated by Tokyu Corporation and known for connecting Sangen-Jaya with the Setagaya area along a short, mostly street-level route.
  • C. Toei Oedo Line
    The Toei Oedo Line is a major Tokyo subway loop and radial line operated by the Tokyo Metropolitan Bureau of Transportation, connecting central districts with many key commercial and residential areas.
  • D. 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.
  • E. Seibu Toshima Line
    The Seibu Toshima Line is a short commuter railway line in Tokyo, Japan, operated by Seibu Railway and connecting Nerima and Toshimaen in the city’s northwest.
  • 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_69ca82e409348190a393777356b80a2a completed March 30, 2026, 2:04 p.m.
NER Named-entity recognition batch_69cdb6124a188190b41feadb7b2f8922 completed April 2, 2026, 12:19 a.m.
NED1 Entity disambiguation (via context triple) batch_69d23d5095e08190a34ff73ab7bcf8a6 completed April 5, 2026, 10:45 a.m.
NEDg Description generation batch_69d24135c0b88190ad018858b99e0bde completed April 5, 2026, 11:02 a.m.
NED2 Entity disambiguation (via description) batch_69d241ca07b481908a2852ed15ed5cf2 completed April 5, 2026, 11:04 a.m.
Created at: March 30, 2026, 8:45 p.m.