Yoo Seung-jun
Steve Sueng Jun Yoo ( born December 15 , 1976 ) , also known as his Korean name Yoo Seung-jun , is a South Korean-American singer and actor who became one of South Korea's most popular K-pop singers after his debut in 1997 . 
<triplet> Yoo Seung-jun <subj> 1997 <obj> work period (start)