Triple

T15204015
Position Surface form Disambiguated ID Type / Status
Subject Toei Asakusa Line E363338 entity
Predicate rollingStock P1305 FINISHED
Object Toei 5500 series
The Toei 5500 series is a modern Japanese electric multiple unit train operated by the Tokyo Metropolitan Bureau of Transportation, designed for through-services and improved comfort and performance on the Toei Asakusa Line.
 E1144989 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: Toei 5500 series | Statement: [Toei Asakusa Line, rollingStock, Toei 5500 series]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Toei 5500 series
Context triple: [Toei Asakusa Line, rollingStock, Toei 5500 series]
  • A. Toei 10-520 series
    The Toei 10-520 series is a modern electric multiple unit train operated by the Tokyo Metropolitan Bureau of Transportation on the Toei Shinjuku Line, featuring updated interiors and systems compared to earlier 10-000 series variants.
  • 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. 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.
  • D. Toei 6500 series EMU
    The Toei 6500 series EMU is a modern Japanese electric multiple unit train operated by the Tokyo Metropolitan Bureau of Transportation, designed for through-services on Tokyo subway and interconnecting commuter lines.
  • E. Toei 12-000 series
    The Toei 12-000 series is a fleet of electric multiple unit trains operated by the Tokyo Metropolitan Bureau of Transportation on the Toei Ōedo Line, known for their deep-level subway operation and distinctive modern design.
  • 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: Toei 5500 series
Triple: [Toei Asakusa Line, rollingStock, Toei 5500 series]
Generated description
The Toei 5500 series is a modern Japanese electric multiple unit train operated by the Tokyo Metropolitan Bureau of Transportation, designed for through-services and improved comfort and performance on the Toei Asakusa Line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Toei 5500 series
Target entity description: The Toei 5500 series is a modern Japanese electric multiple unit train operated by the Tokyo Metropolitan Bureau of Transportation, designed for through-services and improved comfort and performance on the Toei Asakusa Line.
  • A. Toei 10-520 series
    The Toei 10-520 series is a modern electric multiple unit train operated by the Tokyo Metropolitan Bureau of Transportation on the Toei Shinjuku Line, featuring updated interiors and systems compared to earlier 10-000 series variants.
  • 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. 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.
  • D. Toei 6500 series EMU
    The Toei 6500 series EMU is a modern Japanese electric multiple unit train operated by the Tokyo Metropolitan Bureau of Transportation, designed for through-services on Tokyo subway and interconnecting commuter lines.
  • E. Toei 12-000 series
    The Toei 12-000 series is a fleet of electric multiple unit trains operated by the Tokyo Metropolitan Bureau of Transportation on the Toei Ōedo Line, known for their deep-level subway operation and distinctive modern design.
  • 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_69d85a0b78bc8190b6e5ad51a2c4cfc5 completed April 10, 2026, 2:01 a.m.
NER Named-entity recognition batch_69e006b693a48190a6230b7b52bc8cd3 completed April 15, 2026, 9:44 p.m.
NED1 Entity disambiguation (via context triple) batch_69fedd2dc6f08190a8f1612ac29a8654 completed May 9, 2026, 7:07 a.m.
NEDg Description generation batch_69fedf49f1c88190857cb1555e98c97e completed May 9, 2026, 7:16 a.m.
NED2 Entity disambiguation (via description) batch_69fee06a90448190b7733aa5ee8a5d62 completed May 9, 2026, 7:21 a.m.
Created at: April 10, 2026, 3:11 a.m.