Triple

T6339617
Position Surface form Disambiguated ID Type / Status
Subject Waseda Campus E142589 entity
Predicate publicTransitAccess P1288 FINISHED
Object Toden Arakawa Line
The Toden Arakawa Line is one of Tokyo’s last remaining streetcar lines, running through northern and eastern parts of the city and serving as a nostalgic, tram-style alternative to subways and buses.
E849039 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: Toden Arakawa Line | Statement: [Waseda Campus, publicTransitAccess, Toden Arakawa Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Toden Arakawa Line
Context triple: [Waseda Campus, publicTransitAccess, Toden Arakawa Line]
  • A. Oimachi Line
    The Oimachi Line is a commuter railway line in Tokyo, Japan, forming part of the Tokyu network and connecting central Tokyo with its southwestern suburbs.
  • B. Fukutoshin Line
    The Fukutoshin Line is a Tokyo Metro subway line in Tokyo, Japan, connecting major commercial and residential districts such as Shibuya, Shinjuku, and Ikebukuro.
  • C. Negishi Line
    The Negishi Line is a railway line in the Greater Tokyo area of Japan operated by JR East, connecting Yokohama with Ōfuna and serving as part of the Keihin-Tōhoku/Negishi through service corridor.
  • D. Imazatosuji Line
    The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
  • E. Aonami Line
    The Aonami Line is a Japanese railway line in Nagoya that connects the city center with the Nagoya Port area, serving commuters and visitors to attractions like the Nagoya International Exhibition Hall.
  • 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: Toden Arakawa Line
Triple: [Waseda Campus, publicTransitAccess, Toden Arakawa Line]
Generated description
The Toden Arakawa Line is one of Tokyo’s last remaining streetcar lines, running through northern and eastern parts of the city and serving as a nostalgic, tram-style alternative to subways and buses.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Toden Arakawa Line
Target entity description: The Toden Arakawa Line is one of Tokyo’s last remaining streetcar lines, running through northern and eastern parts of the city and serving as a nostalgic, tram-style alternative to subways and buses.
  • A. Oimachi Line
    The Oimachi Line is a commuter railway line in Tokyo, Japan, forming part of the Tokyu network and connecting central Tokyo with its southwestern suburbs.
  • B. Fukutoshin Line
    The Fukutoshin Line is a Tokyo Metro subway line in Tokyo, Japan, connecting major commercial and residential districts such as Shibuya, Shinjuku, and Ikebukuro.
  • C. Negishi Line
    The Negishi Line is a railway line in the Greater Tokyo area of Japan operated by JR East, connecting Yokohama with Ōfuna and serving as part of the Keihin-Tōhoku/Negishi through service corridor.
  • D. Imazatosuji Line
    The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
  • E. Aonami Line
    The Aonami Line is a Japanese railway line in Nagoya that connects the city center with the Nagoya Port area, serving commuters and visitors to attractions like the Nagoya International Exhibition Hall.
  • 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_69c008d5ab108190b346c465696824a9 completed March 22, 2026, 3:20 p.m.
NER Named-entity recognition batch_69c0654fb774819087bffb8b966a790a completed March 22, 2026, 9:55 p.m.
NED1 Entity disambiguation (via context triple) batch_69d57d88cf8c81909fef61dd01bba5da completed April 7, 2026, 9:56 p.m.
NEDg Description generation batch_69d57e5a65848190bfc3d8c93c81bccb completed April 7, 2026, 9:59 p.m.
NED2 Entity disambiguation (via description) batch_69d57eba57d081908fbe569610c9bc16 completed April 7, 2026, 10:01 p.m.
Created at: March 22, 2026, 4:30 p.m.