Triple

T6794994
Position Surface form Disambiguated ID Type / Status
Subject Tobu Tojo Line E156031 entity
Predicate hasRollingStock P1305 FINISHED
Object Tobu 50090 series
The Tobu 50090 series is a Japanese electric multiple unit train operated by Tobu Railway, notable for its long-distance commuter service with rotating seats and through-running onto Tokyo Metro lines.
 E145468 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: Tobu 50090 series | Statement: [Tobu Tojo Line, hasRollingStock, Tobu 50090 series]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Tobu 50090 series
Context triple: [Tobu Tojo Line, hasRollingStock, Tobu 50090 series]
  • A. Tobu 50050 series
    The Tobu 50050 series is a Japanese electric multiple unit train operated by Tobu Railway, designed for through-services with Tokyo Metro and known for its modern commuter-oriented features.
  • B. Tobu 10030 series
    The Tobu 10030 series is a Japanese electric multiple unit train type operated by Tobu Railway for commuter services in the Greater Tokyo area.
  • C. Tobu 30000 series
    The Tobu 30000 series is a Japanese electric multiple unit train type operated by Tobu Railway for commuter services in the Greater Tokyo area.
  • D. Tobu 9000 series
    The Tobu 9000 series is a Japanese electric multiple unit train type operated by Tobu Railway, commonly used for inter-running services with Tokyo Metro lines in the Tokyo metropolitan 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: Tobu 50090 series
Triple: [Tobu Tojo Line, hasRollingStock, Tobu 50090 series]
Generated description
The Tobu 50090 series is a Japanese electric multiple unit train operated by Tobu Railway, notable for its long-distance commuter service with rotating seats and through-running onto Tokyo Metro lines.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Tobu 50090 series
Target entity description: The Tobu 50090 series is a Japanese electric multiple unit train operated by Tobu Railway, notable for its long-distance commuter service with rotating seats and through-running onto Tokyo Metro lines.
  • A. Tobu 50050 series chosen
    The Tobu 50050 series is a Japanese electric multiple unit train operated by Tobu Railway, designed for through-services with Tokyo Metro and known for its modern commuter-oriented features.
  • B. Tobu 10030 series
    The Tobu 10030 series is a Japanese electric multiple unit train type operated by Tobu Railway for commuter services in the Greater Tokyo area.
  • C. Tobu 30000 series
    The Tobu 30000 series is a Japanese electric multiple unit train type operated by Tobu Railway for commuter services in the Greater Tokyo area.
  • D. Tobu 9000 series
    The Tobu 9000 series is a Japanese electric multiple unit train type operated by Tobu Railway, commonly used for inter-running services with Tokyo Metro lines in the Tokyo metropolitan 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.

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_69c6881844448190a65822d9b39d7f88 completed March 27, 2026, 1:37 p.m.
NER Named-entity recognition batch_69c6d2c6e7dc8190b1f33372d047baba completed March 27, 2026, 6:56 p.m.
NED1 Entity disambiguation (via context triple) batch_69c748ad80b881909efd0c0abddb95a5 completed March 28, 2026, 3:19 a.m.
NEDg Description generation batch_69c749a44a3c8190ad8ad35fac7a4859 completed March 28, 2026, 3:23 a.m.
NED2 Entity disambiguation (via description) batch_69c74a1935b88190a9bed6e73f730459 completed March 28, 2026, 3:25 a.m.
Created at: March 27, 2026, 2:15 p.m.