Triple

T19214518
Position Surface form Disambiguated ID Type / Status
Subject Shinbundang Line E480445 entity
Predicate initialSectionOpened P20181 FINISHED
Object Gangnam–Jeongja section
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.
E480445 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: 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.
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: Gangnam–Jeongja section
Triple: [Shinbundang Line, initialSectionOpened, Gangnam–Jeongja section]
Generated 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.
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 (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_69d8e8cb8c348190b52075823911c869 completed April 10, 2026, 12:10 p.m.
NER Named-entity recognition batch_69e5fa397c188190b85bcfd9afd8dce6 completed April 20, 2026, 10:04 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0700e6af48819092d63922162e3a7b completed May 15, 2026, 11:17 a.m.
NEDg Description generation batch_6a070159193081908144fd444eb981e4 completed May 15, 2026, 11:19 a.m.
NED2 Entity disambiguation (via description) batch_6a0701b8fadc81909cd1afae9f2c9746 completed May 15, 2026, 11:21 a.m.
Created at: April 10, 2026, 1:22 p.m.