Triple

T21312036
Position Surface form Disambiguated ID Type / Status
Subject Meitetsu Nagoya Main Line E525362 entity
Predicate partOfNetwork P840 FINISHED
Object Meitetsu network
The Meitetsu network is a privately operated railway system in Japan’s Chubu region, centered on Nagoya, that connects urban, suburban, and regional destinations across Aichi and Gifu Prefectures.
E1477371 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: Meitetsu network | Statement: [Meitetsu Nagoya Main Line, partOfNetwork, Meitetsu network]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Meitetsu network
Context triple: [Meitetsu Nagoya Main Line, partOfNetwork, Meitetsu network]
  • A. Keihan Electric Railway network
    The Keihan Electric Railway network is a private railway system in Japan that primarily connects the Osaka and Kyoto metropolitan areas, serving as a major commuter and intercity transport corridor in the Kansai region.
  • B. Keikyū network
    The Keikyū network is a private railway system in the Greater Tokyo area of Japan, known for its fast commuter and airport access services connecting central Tokyo with Yokohama and Haneda Airport.
  • C. Tokyu railway network
    The Tokyu railway network is a major private rail system in the Greater Tokyo area, operated by Tokyu Corporation and serving key suburban and urban corridors including central hubs like Shibuya.
  • 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. Seibu Railway
    Seibu Railway is a major private railway operator in the Greater Tokyo area of Japan, running extensive commuter and interurban train services across Tokyo and Saitama.
  • 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: Meitetsu network
Triple: [Meitetsu Nagoya Main Line, partOfNetwork, Meitetsu network]
Generated description
The Meitetsu network is a privately operated railway system in Japan’s Chubu region, centered on Nagoya, that connects urban, suburban, and regional destinations across Aichi and Gifu Prefectures.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Meitetsu network
Target entity description: The Meitetsu network is a privately operated railway system in Japan’s Chubu region, centered on Nagoya, that connects urban, suburban, and regional destinations across Aichi and Gifu Prefectures.
  • A. Keihan Electric Railway network
    The Keihan Electric Railway network is a private railway system in Japan that primarily connects the Osaka and Kyoto metropolitan areas, serving as a major commuter and intercity transport corridor in the Kansai region.
  • B. Keikyū network
    The Keikyū network is a private railway system in the Greater Tokyo area of Japan, known for its fast commuter and airport access services connecting central Tokyo with Yokohama and Haneda Airport.
  • C. Tokyu railway network
    The Tokyu railway network is a major private rail system in the Greater Tokyo area, operated by Tokyu Corporation and serving key suburban and urban corridors including central hubs like Shibuya.
  • 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. Seibu Railway
    Seibu Railway is a major private railway operator in the Greater Tokyo area of Japan, running extensive commuter and interurban train services across Tokyo and Saitama.
  • 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_69e0b518b8948190ad69cf9a8784d397 completed April 16, 2026, 10:08 a.m.
NER Named-entity recognition batch_69e75dca66ac8190a5f0a372a9bc25a7 completed April 21, 2026, 11:21 a.m.
NED1 Entity disambiguation (via context triple) batch_6a099ed968d88190aa274406beb46e87 completed May 17, 2026, 10:56 a.m.
NEDg Description generation batch_6a099fb54c00819083422ecadd9aa1f5 completed May 17, 2026, 11 a.m.
NED2 Entity disambiguation (via description) batch_6a09a0242a94819095af1689fe5aea0a completed May 17, 2026, 11:01 a.m.
Created at: April 16, 2026, 4:22 p.m.