Triple

T9544685
Position Surface form Disambiguated ID Type / Status
Subject Tokyu Meguro Line E230250 entity
Predicate rollingStock P1305 FINISHED
Object Tokyu 3000 series EMU
The Tokyu 3000 series EMU is a Japanese electric multiple unit train type operated by Tokyu Corporation, primarily used for commuter services on urban railway lines in the Tokyo area.
 E805839 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: Tokyu 3000 series EMU | Statement: [Tokyu Meguro Line, rollingStock, Tokyu 3000 series EMU]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tokyu 3000 series EMU
Context triple: [Tokyu Meguro Line, rollingStock, Tokyu 3000 series EMU]
  • 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. 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.
  • C. Tokyu 7000 series
    The Tokyu 7000 series is a Japanese electric multiple unit train type operated by Tokyu Corporation and formerly used on Tokyo Metro’s Hibiya Line, known for its stainless-steel body and commuter service design.
  • D. E231 series EMU
    The E231 series EMU is a widely used Japanese commuter train type operated by JR East, known for its high-capacity, rapid-transit service in the Greater Tokyo area.
  • E. 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.
  • 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: Tokyu 3000 series EMU
Triple: [Tokyu Meguro Line, rollingStock, Tokyu 3000 series EMU]
Generated description
The Tokyu 3000 series EMU is a Japanese electric multiple unit train type operated by Tokyu Corporation, primarily used for commuter services on urban railway lines in the Tokyo area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Tokyu 3000 series EMU
Target entity description: The Tokyu 3000 series EMU is a Japanese electric multiple unit train type operated by Tokyu Corporation, primarily used for commuter services on urban railway lines in the Tokyo area.
  • 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. 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.
  • C. Tokyu 7000 series
    The Tokyu 7000 series is a Japanese electric multiple unit train type operated by Tokyu Corporation and formerly used on Tokyo Metro’s Hibiya Line, known for its stainless-steel body and commuter service design.
  • D. E231 series EMU
    The E231 series EMU is a widely used Japanese commuter train type operated by JR East, known for its high-capacity, rapid-transit service in the Greater Tokyo area.
  • E. 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.
  • 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_69d14c6cd93c8190ac197afda780ce78 completed April 4, 2026, 5:37 p.m.
NEDg Description generation batch_69d14d44b7f08190b66fecb315b37535 completed April 4, 2026, 5:41 p.m.
NED2 Entity disambiguation (via description) batch_69d14e0823e881908ed723d20f14789b completed April 4, 2026, 5:44 p.m.
Created at: March 30, 2026, 8:01 p.m.