Question: In what year was the South Korean singer and actor who starred with Jo Yoon-hee, Lee Sung-jae, Kim Gyu-ri and Shin Sung-rok in the series "The King's Face" born?
Sentence (from "Seo In-guk"): He launched his singing career after winning the talent reality show "Superstar K" in 2009, and made his acting breakthrough in tvN's "Reply 1997".
Relevant evidence: No