Triple

T15125593
Position Surface form Disambiguated ID Type / Status
Subject Keikyū Airport Line E361280 entity
Predicate rollingStockUsed P5426 FINISHED
Object Keikyu 600 series EMU
The Keikyu 600 series EMU is a Japanese electric multiple unit train type operated by Keikyu, known for its use on commuter and airport services in the Tokyo–Yokohama area.
 E1145911 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 600 series EMU | Statement: [Keikyū Airport Line, rollingStockUsed, Keikyu 600 series EMU]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Keikyu 600 series EMU
Context triple: [Keikyū Airport Line, rollingStockUsed, Keikyu 600 series EMU]
  • A. 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.
  • B. Keikyu 2100 series EMU
    The Keikyu 2100 series EMU is a Japanese electric multiple unit train operated by Keikyu, known for its distinctive front design and use on limited express and commuter services in the Tokyo–Yokohama area.
  • 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. 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 6300 series EMU
    The Toei 6300 series EMU is a Japanese electric multiple unit train type operated by the Tokyo Metropolitan Bureau of Transportation, primarily used on through-services connecting the Toei Mita Line with other suburban 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: Keikyu 600 series EMU
Triple: [Keikyū Airport Line, rollingStockUsed, Keikyu 600 series EMU]
Generated description
The Keikyu 600 series EMU is a Japanese electric multiple unit train type operated by Keikyu, known for its use on commuter and airport services in the Tokyo–Yokohama area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Keikyu 600 series EMU
Target entity description: The Keikyu 600 series EMU is a Japanese electric multiple unit train type operated by Keikyu, known for its use on commuter and airport services in the Tokyo–Yokohama area.
  • A. 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.
  • B. Keikyu 2100 series EMU
    The Keikyu 2100 series EMU is a Japanese electric multiple unit train operated by Keikyu, known for its distinctive front design and use on limited express and commuter services in the Tokyo–Yokohama area.
  • 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. 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 6300 series EMU
    The Toei 6300 series EMU is a Japanese electric multiple unit train type operated by the Tokyo Metropolitan Bureau of Transportation, primarily used on through-services connecting the Toei Mita Line with other suburban 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_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_69fedd24523081908cf12a5d6bdd634d completed May 9, 2026, 7:07 a.m.
NEDg Description generation batch_69fee0fdab548190b2ec90ae275411a8 completed May 9, 2026, 7:23 a.m.
NED2 Entity disambiguation (via description) batch_69fee1eb7b488190b1aef3bb2bc8b8ec completed May 9, 2026, 7:27 a.m.
Created at: April 10, 2026, 3:06 a.m.