Triple

T15855660
Position Surface form Disambiguated ID Type / Status
Subject Seibu Shinjuku Line E384447 entity
Predicate rollingStock P1305 FINISHED
Object Seibu 2000 series EMU
The Seibu 2000 series EMU is a Japanese electric multiple unit train type operated by Seibu Railway, primarily used for commuter services in the Tokyo area.
 E1179530 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: Seibu 2000 series EMU | Statement: [Seibu Shinjuku Line, rollingStock, Seibu 2000 series EMU]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Seibu 2000 series EMU
Context triple: [Seibu Shinjuku Line, rollingStock, Seibu 2000 series EMU]
  • A. Seibu 40000 series
    The Seibu 40000 series is a modern Japanese electric multiple unit train operated by Seibu Railway, designed for commuter services with features such as long-distance comfort seating and improved passenger amenities.
  • B. Seibu 6000 series
    The Seibu 6000 series is a Japanese electric multiple unit train type operated by Seibu Railway, commonly used for through-services on Tokyo subway lines.
  • C. 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.
  • D. 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.
  • E. Tokyu 5080 series EMU
    The Tokyu 5080 series EMU is a Japanese electric multiple unit train operated by Tokyu Corporation, primarily used for commuter services in the Tokyo area with through-running onto various subway and interurban lines.
  • 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: Seibu 2000 series EMU
Triple: [Seibu Shinjuku Line, rollingStock, Seibu 2000 series EMU]
Generated description
The Seibu 2000 series EMU is a Japanese electric multiple unit train type operated by Seibu Railway, primarily used for commuter services in the Tokyo area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Seibu 2000 series EMU
Target entity description: The Seibu 2000 series EMU is a Japanese electric multiple unit train type operated by Seibu Railway, primarily used for commuter services in the Tokyo area.
  • A. Seibu 40000 series
    The Seibu 40000 series is a modern Japanese electric multiple unit train operated by Seibu Railway, designed for commuter services with features such as long-distance comfort seating and improved passenger amenities.
  • B. Seibu 6000 series
    The Seibu 6000 series is a Japanese electric multiple unit train type operated by Seibu Railway, commonly used for through-services on Tokyo subway lines.
  • C. 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.
  • D. 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.
  • E. Tokyu 5080 series EMU
    The Tokyu 5080 series EMU is a Japanese electric multiple unit train operated by Tokyu Corporation, primarily used for commuter services in the Tokyo area with through-running onto various subway and interurban lines.
  • 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_69d86da422088190aac39e32e6c68429 completed April 10, 2026, 3:25 a.m.
NER Named-entity recognition batch_69e14cb08bd081908af2120eb2925441 completed April 16, 2026, 8:55 p.m.
NED1 Entity disambiguation (via context triple) batch_69ffa14977408190815ef02cc54075cc completed May 9, 2026, 9:04 p.m.
NEDg Description generation batch_69ffa41a86ec8190b46d541965ecf26e completed May 9, 2026, 9:16 p.m.
NED2 Entity disambiguation (via description) batch_69ffa496f3e48190b8dc82bece548aec completed May 9, 2026, 9:18 p.m.
Created at: April 10, 2026, 4:50 a.m.