Triple

T19214518
Position Surface form Disambiguated ID Type / Status
Subject Shinbundang Line E480445 entity
Predicate initialSectionOpened P20181 FINISHED
Object Gangnam–Jeongja section — NE NERFINISHED

How this triple was built (3 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: Gangnam–Jeongja section | Statement: [Shinbundang Line, initialSectionOpened, Gangnam–Jeongja section]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Gangnam–Jeongja section
Context triple: [Shinbundang Line, initialSectionOpened, Gangnam–Jeongja section]
  • A. Ulsan–Pohang section
    The Ulsan–Pohang section is a coastal railway segment in South Korea connecting the cities of Ulsan and Pohang as part of the Donghae Line.
  • B. Busan–Ulsan section
    The Busan–Ulsan section is a coastal railway segment in southeastern South Korea that connects the major port city of Busan with the industrial city of Ulsan.
  • C. Seoul Station–Gimpo International Airport section
    The Seoul Station–Gimpo International Airport section is the central urban stretch of South Korea’s AREX rail line, linking downtown Seoul with one of the capital’s main airports.
  • D. Shinbundang Line
    The Shinbundang Line is a high-speed, driverless subway line in the Seoul metropolitan area that connects southern Seoul with the satellite city of Bundang.
  • E. Pohang–Samcheok section
    The Pohang–Samcheok section is a coastal railway segment in South Korea connecting the cities of Pohang and Samcheok along the Donghae Line.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Gangnam–Jeongja section
Target entity description: The Gangnam–Jeongja section is the original southern segment of Seoul’s Shinbundang Line, a high-speed subway corridor linking Gangnam in Seoul with Jeongja in Seongnam.
  • A. Ulsan–Pohang section
    The Ulsan–Pohang section is a coastal railway segment in South Korea connecting the cities of Ulsan and Pohang as part of the Donghae Line.
  • B. Busan–Ulsan section
    The Busan–Ulsan section is a coastal railway segment in southeastern South Korea that connects the major port city of Busan with the industrial city of Ulsan.
  • C. Seoul Station–Gimpo International Airport section
    The Seoul Station–Gimpo International Airport section is the central urban stretch of South Korea’s AREX rail line, linking downtown Seoul with one of the capital’s main airports.
  • D. Shinbundang Line chosen
    The Shinbundang Line is a high-speed, driverless subway line in the Seoul metropolitan area that connects southern Seoul with the satellite city of Bundang.
  • E. Pohang–Samcheok section
    The Pohang–Samcheok section is a coastal railway segment in South Korea connecting the cities of Pohang and Samcheok along the Donghae Line.
  • F. None of above.

Provenance (2 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_69d8e8cb8c348190b52075823911c869 completed April 10, 2026, 12:10 p.m.
NER Named-entity recognition batch_69e5fa397c188190b85bcfd9afd8dce6 completed April 20, 2026, 10:04 a.m.
Created at: April 10, 2026, 1:22 p.m.