Triple

T7217865
Position Surface form Disambiguated ID Type / Status
Subject Daegu Metro E150181 entity
Predicate operator P179 FINISHED
Object Daegu Metropolitan Transit Corporation
Daegu Metropolitan Transit Corporation is the public company responsible for operating and managing the urban rail transit system in Daegu, South Korea.
 E653782 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: Daegu Metropolitan Transit Corporation | Statement: [Daegu Metro, operator, Daegu Metropolitan Transit Corporation]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Daegu Metropolitan Transit Corporation
Context triple: [Daegu Metro, operator, Daegu Metropolitan Transit Corporation]
  • A. Incheon Transit Corporation
    Incheon Transit Corporation is a public transportation company responsible for operating and managing the urban rail network in Incheon, South Korea.
  • B. Busan Transportation Corporation
    Busan Transportation Corporation is the public company responsible for operating and managing the Busan Metro system in Busan, South Korea.
  • C. Gyeonggi Railroad Co., Ltd.
    Gyeonggi Railroad Co., Ltd. is a South Korean railway company responsible for operating segments of the Seoul Metropolitan Subway network.
  • D. Busan Metro
    Busan Metro is the rapid transit system serving the city of Busan, South Korea, providing extensive urban and suburban rail transportation across the metropolitan area.
  • E. Korea Rail Network Authority
    The Korea Rail Network Authority is a South Korean government agency responsible for planning, constructing, and managing the nation’s railway infrastructure.
  • 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: Daegu Metropolitan Transit Corporation
Triple: [Daegu Metro, operator, Daegu Metropolitan Transit Corporation]
Generated description
Daegu Metropolitan Transit Corporation is the public company responsible for operating and managing the urban rail transit system in Daegu, South Korea.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Daegu Metropolitan Transit Corporation
Target entity description: Daegu Metropolitan Transit Corporation is the public company responsible for operating and managing the urban rail transit system in Daegu, South Korea.
  • A. Incheon Transit Corporation
    Incheon Transit Corporation is a public transportation company responsible for operating and managing the urban rail network in Incheon, South Korea.
  • B. Busan Transportation Corporation
    Busan Transportation Corporation is the public company responsible for operating and managing the Busan Metro system in Busan, South Korea.
  • C. Gyeonggi Railroad Co., Ltd.
    Gyeonggi Railroad Co., Ltd. is a South Korean railway company responsible for operating segments of the Seoul Metropolitan Subway network.
  • D. Busan Metro
    Busan Metro is the rapid transit system serving the city of Busan, South Korea, providing extensive urban and suburban rail transportation across the metropolitan area.
  • E. Korea Rail Network Authority
    The Korea Rail Network Authority is a South Korean government agency responsible for planning, constructing, and managing the nation’s railway infrastructure.
  • 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_69c687effb44819092b95d07d0368c9f completed March 27, 2026, 1:36 p.m.
NER Named-entity recognition batch_69c6e99170d88190b1aef326a7d81134 completed March 27, 2026, 8:33 p.m.
NED1 Entity disambiguation (via context triple) batch_69c7db092ed481908f478860418eb0bd completed March 28, 2026, 1:43 p.m.
NEDg Description generation batch_69c7dbf65fb08190ae8a9c4e57d42e97 completed March 28, 2026, 1:47 p.m.
NED2 Entity disambiguation (via description) batch_69c7dc6873a081908ea4e953430ec20b completed March 28, 2026, 1:49 p.m.
Created at: March 27, 2026, 2:53 p.m.