Triple

T11161506
Position Surface form Disambiguated ID Type / Status
Subject Tokyo Metro Marunouchi Line E264046 entity
Predicate rollingStock P1305 FINISHED
Object Tokyo Metro 02 series (former)
The Tokyo Metro 02 series (former) was a fleet of electric multiple unit trains that operated on Tokyo’s Marunouchi Line, known for replacing the older 300/500/900 series sets and serving as the line’s primary rolling stock for several decades before being retired.
 E909648 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 02 series (former) | Statement: [Tokyo Metro Marunouchi Line, rollingStock, Tokyo Metro 02 series (former)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tokyo Metro 02 series (former)
Context triple: [Tokyo Metro Marunouchi Line, rollingStock, Tokyo Metro 02 series (former)]
  • A. Tokyo Metro 2000 series
    The Tokyo Metro 2000 series is a modern electric multiple unit train used on Tokyo’s subway network, featuring energy-efficient systems and updated passenger amenities.
  • B. Tokyo Metro 07 series
    The Tokyo Metro 07 series is a Japanese electric multiple unit train type that formerly operated on Tokyo Metro lines before being phased out in favor of newer rolling stock.
  • C. 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.
  • D. 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.
  • E. 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.
  • 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 02 series (former)
Triple: [Tokyo Metro Marunouchi Line, rollingStock, Tokyo Metro 02 series (former)]
Generated description
The Tokyo Metro 02 series (former) was a fleet of electric multiple unit trains that operated on Tokyo’s Marunouchi Line, known for replacing the older 300/500/900 series sets and serving as the line’s primary rolling stock for several decades before being retired.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Tokyo Metro 02 series (former)
Target entity description: The Tokyo Metro 02 series (former) was a fleet of electric multiple unit trains that operated on Tokyo’s Marunouchi Line, known for replacing the older 300/500/900 series sets and serving as the line’s primary rolling stock for several decades before being retired.
  • A. Tokyo Metro 2000 series
    The Tokyo Metro 2000 series is a modern electric multiple unit train used on Tokyo’s subway network, featuring energy-efficient systems and updated passenger amenities.
  • B. Tokyo Metro 07 series
    The Tokyo Metro 07 series is a Japanese electric multiple unit train type that formerly operated on Tokyo Metro lines before being phased out in favor of newer rolling stock.
  • C. 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.
  • D. 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.
  • E. 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.
  • 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_69d6aa9ccddc8190868998c8b7beb060 completed April 8, 2026, 7:21 p.m.
NER Named-entity recognition batch_69d7e8817a90819087820d5241c58851 completed April 9, 2026, 5:57 p.m.
NED1 Entity disambiguation (via context triple) batch_69e483747ba88190aa6ef9df2545b18b completed April 19, 2026, 7:25 a.m.
NEDg Description generation batch_69e485f46f0c81908dbe5b47322ab7b7 completed April 19, 2026, 7:36 a.m.
NED2 Entity disambiguation (via description) batch_69e4878dd95c81908ceaf91ee46f49c1 completed April 19, 2026, 7:43 a.m.
Created at: April 8, 2026, 9:29 p.m.