Triple

T10169883
Position Surface form Disambiguated ID Type / Status
Subject Keisei Skyliner E235302 entity
Predicate rollingStock P1305 FINISHED
Object Keisei AE series EMU
The Keisei AE series EMU is a high-speed electric multiple unit train operated by Keisei Electric Railway in Japan, primarily used for the premium airport express service between central Tokyo and Narita Airport.
 E845964 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: Keisei AE series EMU | Statement: [Keisei Skyliner, rollingStock, Keisei AE series EMU]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Keisei AE series EMU
Context triple: [Keisei Skyliner, rollingStock, Keisei AE series EMU]
  • A. 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.
  • B. 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.
  • 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 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.
  • E. 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.
  • 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: Keisei AE series EMU
Triple: [Keisei Skyliner, rollingStock, Keisei AE series EMU]
Generated description
The Keisei AE series EMU is a high-speed electric multiple unit train operated by Keisei Electric Railway in Japan, primarily used for the premium airport express service between central Tokyo and Narita Airport.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Keisei AE series EMU
Target entity description: The Keisei AE series EMU is a high-speed electric multiple unit train operated by Keisei Electric Railway in Japan, primarily used for the premium airport express service between central Tokyo and Narita Airport.
  • A. 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.
  • B. 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.
  • 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 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.
  • E. 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.
  • 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_69ca84ceafd0819085828600e11bed6b completed March 30, 2026, 2:12 p.m.
NER Named-entity recognition batch_69cdec9ba56481908b5265aea8ea8cbe completed April 2, 2026, 4:12 a.m.
NED1 Entity disambiguation (via context triple) batch_69d300f7aafc8190be874efc755bd188 completed April 6, 2026, 12:40 a.m.
NEDg Description generation batch_69d30255c7408190a56764f3d3f36ee2 completed April 6, 2026, 12:46 a.m.
NED2 Entity disambiguation (via description) batch_69d30343f4b081909eb80c772f6847bd completed April 6, 2026, 12:50 a.m.
Created at: March 30, 2026, 9:10 p.m.