Question: What agency discovered an American singer based in South Korea who was on the first season of a South Korean reality show that aired every Friday on KBS 2TV from April 8 to December 2, 2016 ?
Sentence (from "Tiffany Hwang"): Stephanie Young Hwang (born August 1, 1989), known professionally as Tiffany or Tiffany Hwang, is an American singer based in South Korea.
Relevant evidence: No