Triple

T15125591
Position Surface form Disambiguated ID Type / Status
Subject Keikyū Airport Line E361280 entity
Predicate rollingStockUsed P5426 FINISHED
Object Keikyu 1000 series EMU
The Keikyu 1000 series EMU is a Japanese electric multiple unit train type operated by Keikyu for commuter and airport access services in the Tokyo–Yokohama area.
 E1141971 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: Keikyu 1000 series EMU | Statement: [Keikyū Airport Line, rollingStockUsed, Keikyu 1000 series EMU]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Keikyu 1000 series EMU
Context triple: [Keikyū Airport Line, rollingStockUsed, Keikyu 1000 series EMU]
  • A. 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.
  • B. Odakyu 1000 series EMU
    The Odakyu 1000 series EMU is a Japanese electric multiple unit train type operated by Odakyu Electric Railway for commuter services in the Tokyo area.
  • C. Odakyu 3000 series EMU
    The Odakyu 3000 series EMU is a Japanese electric multiple unit train type operated by Odakyu Electric Railway for commuter services in the Tokyo 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. Nagoya 5000 series trains
    The Nagoya 5000 series trains are Japanese-built electric multiple units originally used in Nagoya that were later exported and adapted for service on Buenos Aires’ Line D of the underground.
  • 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: Keikyu 1000 series EMU
Triple: [Keikyū Airport Line, rollingStockUsed, Keikyu 1000 series EMU]
Generated description
The Keikyu 1000 series EMU is a Japanese electric multiple unit train type operated by Keikyu for commuter and airport access services in the Tokyo–Yokohama area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Keikyu 1000 series EMU
Target entity description: The Keikyu 1000 series EMU is a Japanese electric multiple unit train type operated by Keikyu for commuter and airport access services in the Tokyo–Yokohama area.
  • A. 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.
  • B. Odakyu 1000 series EMU
    The Odakyu 1000 series EMU is a Japanese electric multiple unit train type operated by Odakyu Electric Railway for commuter services in the Tokyo area.
  • C. Odakyu 3000 series EMU
    The Odakyu 3000 series EMU is a Japanese electric multiple unit train type operated by Odakyu Electric Railway for commuter services in the Tokyo 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. Nagoya 5000 series trains
    The Nagoya 5000 series trains are Japanese-built electric multiple units originally used in Nagoya that were later exported and adapted for service on Buenos Aires’ Line D of the underground.
  • 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_69d85a06450081909c5a14ea9851a15e completed April 10, 2026, 2:01 a.m.
NER Named-entity recognition batch_69e005a1b9288190954f2d92549805e5 completed April 15, 2026, 9:39 p.m.
NED1 Entity disambiguation (via context triple) batch_69fec87ed2cc8190b4cae72774e0df7f completed May 9, 2026, 5:39 a.m.
NEDg Description generation batch_69fecbcd8d1881909706e7350e63e6c1 completed May 9, 2026, 5:53 a.m.
NED2 Entity disambiguation (via description) batch_69fecbf6751081908a97485497047e6c completed May 9, 2026, 5:53 a.m.
Created at: April 10, 2026, 3:06 a.m.