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"): Seo In-guk (; born October 23, 1987) is a South Korean singer and actor.
Relevant evidence: Yes