Triple

T19540604
Position Surface form Disambiguated ID Type / Status
Subject Seoul Subway Line 3 E488887 entity
Predicate openedSection P28341 FINISHED
Object Gupabal–Yangjae section
The Gupabal–Yangjae section is a major stretch of Seoul Subway Line 3 that connects northern and southern parts of the city through central Seoul.
E1393146 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: Gupabal–Yangjae section | Statement: [Seoul Subway Line 3, openedSection, Gupabal–Yangjae section]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Gupabal–Yangjae section
Context triple: [Seoul Subway Line 3, openedSection, Gupabal–Yangjae section]
  • A. 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.
  • B. Jeongja–Gwanggyo section
    The Jeongja–Gwanggyo section is a southern extension of Seoul’s Shinbundang Line that connects Jeongja Station in Bundang to the Gwanggyo area of Suwon, improving regional commuter rail access.
  • C. 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.
  • D. 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.
  • E. Seohae Line
    The Seohae Line is a commuter rail line in South Korea that serves the western Seoul metropolitan area, connecting cities such as Hwaseong with other parts of the region.
  • 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: Gupabal–Yangjae section
Triple: [Seoul Subway Line 3, openedSection, Gupabal–Yangjae section]
Generated description
The Gupabal–Yangjae section is a major stretch of Seoul Subway Line 3 that connects northern and southern parts of the city through central Seoul.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Gupabal–Yangjae section
Target entity description: The Gupabal–Yangjae section is a major stretch of Seoul Subway Line 3 that connects northern and southern parts of the city through central Seoul.
  • A. 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.
  • B. Jeongja–Gwanggyo section
    The Jeongja–Gwanggyo section is a southern extension of Seoul’s Shinbundang Line that connects Jeongja Station in Bundang to the Gwanggyo area of Suwon, improving regional commuter rail access.
  • C. 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.
  • D. 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.
  • E. Seohae Line
    The Seohae Line is a commuter rail line in South Korea that serves the western Seoul metropolitan area, connecting cities such as Hwaseong with other parts of the region.
  • 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_69d8e8db5b6c8190984b61f91981f575 completed April 10, 2026, 12:11 p.m.
NER Named-entity recognition batch_69e63872fda48190bbb1f465cb7b57fe completed April 20, 2026, 2:30 p.m.
NED1 Entity disambiguation (via context triple) batch_6a07b4db32ac8190a760689f1fccda35 completed May 16, 2026, 12:05 a.m.
NEDg Description generation batch_6a07b597f42481908f242f66116f82f7 completed May 16, 2026, 12:08 a.m.
NED2 Entity disambiguation (via description) batch_6a07b6c9fc8c8190825953f50935833e completed May 16, 2026, 12:14 a.m.
Created at: April 10, 2026, 1:41 p.m.