Triple

T7038925
Position Surface form Disambiguated ID Type / Status
Subject Minatomirai Line E163456 entity
Predicate rollingStockUsed P5426 FINISHED
Object Yokohama Minatomirai Railway Y500 series
The Yokohama Minatomirai Railway Y500 series is a Japanese electric multiple unit train type operated in the Yokohama area, known for its distinctive blue livery and use on through-services with the Tokyo Metro network.
 E636617 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: Yokohama Minatomirai Railway Y500 series | Statement: [Minatomirai Line, rollingStockUsed, Yokohama Minatomirai Railway Y500 series]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Yokohama Minatomirai Railway Y500 series
Context triple: [Minatomirai Line, rollingStockUsed, Yokohama Minatomirai Railway Y500 series]
  • A. Tokyu 5000 series
    The Tokyu 5000 series is a Japanese electric multiple unit train type operated by Tokyu Corporation, primarily used for commuter services in the Tokyo metropolitan area.
  • B. Tokyu 5050 series
    The Tokyu 5050 series is a Japanese electric multiple unit commuter train type operated by Tokyu Corporation and used on through-services with Tokyo Metro and other railway lines in the Tokyo area.
  • C. Keio 1000 series EMU
    The Keio 1000 series EMU is a Japanese electric multiple unit train operated by Keio Corporation, known for serving Tokyo’s Inokashira Line with modern, colorful commuter rolling stock.
  • D. Hankyu 5300 series
    The Hankyu 5300 series is a Japanese electric multiple unit train type operated by Hankyu Railway, primarily used for commuter services in the Kansai region.
  • E. JR West 271 series
    The JR West 271 series is a Japanese limited express electric multiple unit train operated by West Japan Railway Company, primarily used for airport and intercity services.
  • 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: Yokohama Minatomirai Railway Y500 series
Triple: [Minatomirai Line, rollingStockUsed, Yokohama Minatomirai Railway Y500 series]
Generated description
The Yokohama Minatomirai Railway Y500 series is a Japanese electric multiple unit train type operated in the Yokohama area, known for its distinctive blue livery and use on through-services with the Tokyo Metro network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Yokohama Minatomirai Railway Y500 series
Target entity description: The Yokohama Minatomirai Railway Y500 series is a Japanese electric multiple unit train type operated in the Yokohama area, known for its distinctive blue livery and use on through-services with the Tokyo Metro network.
  • A. Tokyu 5000 series
    The Tokyu 5000 series is a Japanese electric multiple unit train type operated by Tokyu Corporation, primarily used for commuter services in the Tokyo metropolitan area.
  • B. Tokyu 5050 series
    The Tokyu 5050 series is a Japanese electric multiple unit commuter train type operated by Tokyu Corporation and used on through-services with Tokyo Metro and other railway lines in the Tokyo area.
  • C. Keio 1000 series EMU
    The Keio 1000 series EMU is a Japanese electric multiple unit train operated by Keio Corporation, known for serving Tokyo’s Inokashira Line with modern, colorful commuter rolling stock.
  • D. Hankyu 5300 series
    The Hankyu 5300 series is a Japanese electric multiple unit train type operated by Hankyu Railway, primarily used for commuter services in the Kansai region.
  • E. JR West 271 series
    The JR West 271 series is a Japanese limited express electric multiple unit train operated by West Japan Railway Company, primarily used for airport and intercity services.
  • 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_69c6885e7c1c8190be32a8f79ab4e0cf completed March 27, 2026, 1:38 p.m.
NER Named-entity recognition batch_69c6e223077c819097992089fa83c563 completed March 27, 2026, 8:01 p.m.
NED1 Entity disambiguation (via context triple) batch_69c775ac21888190a1adcf86b49b345f completed March 28, 2026, 6:31 a.m.
NEDg Description generation batch_69c777f9b41881909566511e97725fde completed March 28, 2026, 6:40 a.m.
NED2 Entity disambiguation (via description) batch_69c778717e888190a0b2a5914d13cb71 completed March 28, 2026, 6:42 a.m.
Created at: March 27, 2026, 2:36 p.m.