Triple

T9544687
Position Surface form Disambiguated ID Type / Status
Subject Tokyu Meguro Line E230250 entity
Predicate rollingStock P1305 FINISHED
Object Tokyo Metro 9000 series EMU
The Tokyo Metro 9000 series EMU is a Japanese electric multiple unit train type used for commuter services on Tokyo Metro’s Namboku Line and through-services onto lines such as the Tokyu Meguro Line.
 E808448 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: Tokyo Metro 9000 series EMU | Statement: [Tokyu Meguro Line, rollingStock, Tokyo Metro 9000 series EMU]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tokyo Metro 9000 series EMU
Context triple: [Tokyu Meguro Line, rollingStock, Tokyo Metro 9000 series EMU]
  • A. Tokyo Metro 16000 series
    The Tokyo Metro 16000 series is a modern electric multiple unit train type operated by Tokyo Metro, primarily used for commuter services on the Chiyoda Line.
  • B. Tokyo Metro 18000 series
    The Tokyo Metro 18000 series is a modern electric multiple unit train operated by Tokyo Metro, designed for through-services on lines such as the Hanzomon Line and connecting suburban routes.
  • C. Tokyo Metro 13000 series
    The Tokyo Metro 13000 series is a modern electric multiple unit train operated by Tokyo Metro, introduced to provide improved comfort, efficiency, and accessibility on urban subway services.
  • D. Tokyo Metro 17000 series
    The Tokyo Metro 17000 series is a modern electric multiple unit train operated by Tokyo Metro, designed for through-services on lines such as the Fukutoshin and Yurakucho Lines with improved energy efficiency and passenger comfort.
  • E. Tokyo Metro 8000 series
    The Tokyo Metro 8000 series is a fleet of electric multiple unit trains introduced in the early 1980s for Tokyo’s subway network, known for their long service life and multiple refurbishment programs.
  • 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: Tokyo Metro 9000 series EMU
Triple: [Tokyu Meguro Line, rollingStock, Tokyo Metro 9000 series EMU]
Generated description
The Tokyo Metro 9000 series EMU is a Japanese electric multiple unit train type used for commuter services on Tokyo Metro’s Namboku Line and through-services onto lines such as the Tokyu Meguro Line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Tokyo Metro 9000 series EMU
Target entity description: The Tokyo Metro 9000 series EMU is a Japanese electric multiple unit train type used for commuter services on Tokyo Metro’s Namboku Line and through-services onto lines such as the Tokyu Meguro Line.
  • A. Tokyo Metro 16000 series
    The Tokyo Metro 16000 series is a modern electric multiple unit train type operated by Tokyo Metro, primarily used for commuter services on the Chiyoda Line.
  • B. Tokyo Metro 18000 series
    The Tokyo Metro 18000 series is a modern electric multiple unit train operated by Tokyo Metro, designed for through-services on lines such as the Hanzomon Line and connecting suburban routes.
  • C. Tokyo Metro 13000 series
    The Tokyo Metro 13000 series is a modern electric multiple unit train operated by Tokyo Metro, introduced to provide improved comfort, efficiency, and accessibility on urban subway services.
  • D. Tokyo Metro 17000 series
    The Tokyo Metro 17000 series is a modern electric multiple unit train operated by Tokyo Metro, designed for through-services on lines such as the Fukutoshin and Yurakucho Lines with improved energy efficiency and passenger comfort.
  • E. Tokyo Metro 8000 series
    The Tokyo Metro 8000 series is a fleet of electric multiple unit trains introduced in the early 1980s for Tokyo’s subway network, known for their long service life and multiple refurbishment programs.
  • 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_69ca847c70b8819088a0a0bad64a50d6 completed March 30, 2026, 2:11 p.m.
NER Named-entity recognition batch_69cd98ebd4148190b71b134d7545fe35 completed April 1, 2026, 10:15 p.m.
NED1 Entity disambiguation (via context triple) batch_69d161355e2c819099c8e6b974f97608 completed April 4, 2026, 7:06 p.m.
NEDg Description generation batch_69d16230a99481909d82d03babe6729a completed April 4, 2026, 7:10 p.m.
NED2 Entity disambiguation (via description) batch_69d16321aba88190a7e8359dbaa5362b completed April 4, 2026, 7:14 p.m.
Created at: March 30, 2026, 8:01 p.m.