Triple

T13375440
Position Surface form Disambiguated ID Type / Status
Subject Yamatoji Rapid Service E319169 entity
Predicate rollingStock P1305 FINISHED
Object 221 series EMU
The 221 series EMU is a Japanese suburban electric multiple unit train operated by JR West, known for its use on commuter and rapid services in the Kansai region.
 E1038254 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: 221 series EMU | Statement: [Yamatoji Rapid Service, rollingStock, 221 series EMU]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: 221 series EMU
Context triple: [Yamatoji Rapid Service, rollingStock, 221 series EMU]
  • A. 207 series EMU
    The 207 series EMU is a Japanese electric multiple unit commuter train type operated primarily in the Kansai region by JR West.
  • B. 321 series EMU
    The 321 series EMU is a Japanese electric multiple unit train type operated by JR West for commuter services in the Kansai region.
  • C. 201 series EMU
    The 201 series EMU is a Japanese electric multiple unit train type introduced by Japanese National Railways in the late 1970s and used extensively on urban commuter lines such as those in the Osaka and Tokyo areas.
  • D. 205 series EMU
    The 205 series EMU is a Japanese commuter electric multiple unit train type introduced by Japanese National Railways and widely used on busy urban and suburban lines, particularly around the Tokyo area.
  • E. 446 series EMU
    The 446 series EMU is a type of electric multiple unit train used for commuter and regional passenger services.
  • 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: 221 series EMU
Triple: [Yamatoji Rapid Service, rollingStock, 221 series EMU]
Generated description
The 221 series EMU is a Japanese suburban electric multiple unit train operated by JR West, known for its use on commuter and rapid services in the Kansai region.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: 221 series EMU
Target entity description: The 221 series EMU is a Japanese suburban electric multiple unit train operated by JR West, known for its use on commuter and rapid services in the Kansai region.
  • A. 207 series EMU
    The 207 series EMU is a Japanese electric multiple unit commuter train type operated primarily in the Kansai region by JR West.
  • B. 321 series EMU
    The 321 series EMU is a Japanese electric multiple unit train type operated by JR West for commuter services in the Kansai region.
  • C. 201 series EMU
    The 201 series EMU is a Japanese electric multiple unit train type introduced by Japanese National Railways in the late 1970s and used extensively on urban commuter lines such as those in the Osaka and Tokyo areas.
  • D. 205 series EMU
    The 205 series EMU is a Japanese commuter electric multiple unit train type introduced by Japanese National Railways and widely used on busy urban and suburban lines, particularly around the Tokyo area.
  • E. 446 series EMU
    The 446 series EMU is a type of electric multiple unit train used for commuter and regional passenger services.
  • 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_69d806b886bc8190b676e7768b8e01c5 completed April 9, 2026, 8:06 p.m.
NER Named-entity recognition batch_69dadce3fec48190a5443d87c85477a3 completed April 11, 2026, 11:44 p.m.
NED1 Entity disambiguation (via context triple) batch_69f7306a4c688190bfbf5e695b2fd5e5 completed May 3, 2026, 11:24 a.m.
NEDg Description generation batch_69f7311f14988190989e319741ef0ccf completed May 3, 2026, 11:27 a.m.
NED2 Entity disambiguation (via description) batch_69f731e24d508190a896875210be3189 completed May 3, 2026, 11:30 a.m.
Created at: April 9, 2026, 9:33 p.m.