Triple

T23161985
Position Surface form Disambiguated ID Type / Status
Subject E217 series E578610 entity
Predicate family P566 FINISHED
Object JR East E-series EMUs
JR East E-series EMUs are a group of electric multiple unit train types operated by East Japan Railway Company, designed for various commuter and suburban services across eastern Japan.
 E1072317 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: JR East E-series EMUs | Statement: [E217 series, family, JR East E-series EMUs]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: JR East E-series EMUs
Context triple: [E217 series, family, JR East E-series EMUs]
  • A. JR East E231-500 series EMU
    The JR East E231-500 series EMU is a Japanese commuter electric multiple unit train type operated by East Japan Railway Company, known for its high-capacity, high-frequency service in the Tokyo metropolitan area.
  • B. 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.
  • C. 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.
  • D. 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.
  • 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: JR East E-series EMUs
Triple: [E217 series, family, JR East E-series EMUs]
Generated description
JR East E-series EMUs are a group of electric multiple unit train types operated by East Japan Railway Company, designed for various commuter and suburban services across eastern Japan.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: JR East E-series EMUs
Target entity description: JR East E-series EMUs are a group of electric multiple unit train types operated by East Japan Railway Company, designed for various commuter and suburban services across eastern Japan.
  • A. JR East E231-500 series EMU chosen
    The JR East E231-500 series EMU is a Japanese commuter electric multiple unit train type operated by East Japan Railway Company, known for its high-capacity, high-frequency service in the Tokyo metropolitan area.
  • B. 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.
  • C. 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.
  • D. 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.
  • 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.

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_69e245fc75348190a0288401044c8af8 completed April 17, 2026, 2:38 p.m.
NER Named-entity recognition batch_69f18f019cd881908e3c68d99454da2a completed April 29, 2026, 4:54 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0c30a21a548190add77bc839424eb3 completed May 19, 2026, 9:42 a.m.
NEDg Description generation batch_6a0c330135cc8190b5a0e512bda6277d completed May 19, 2026, 9:53 a.m.
NED2 Entity disambiguation (via description) batch_6a0c375dd5a4819097a80ae43a1c4442 completed May 19, 2026, 10:11 a.m.
Created at: April 17, 2026, 4:02 p.m.