Task: Question Generation
Input (English): Context : JTBC (Hangul: 제이티비씨) is a South Korean nationwide general cable TV network and broadcasting company, in which the largest shareholder is JoongAng Ilbo/JoongAng Media Network with 25% of shares. 
Subject : JTBC 
Relation : parent company
Output (English): What company is JTBC part of?