Complex sentence: Jang Hyun-Kyu (born 22 August 1981) is a South Korea football player who since 2009 has played for Gwangju Sangmu Phoenix (formerly Daejeon Citizen and Pohang Steelers).
Split into simpler sentences: Jang Hyun-Kyu (born 22 August 1981) is a South Korea footballer. Since 2009, he has played for Gwangju Sangmu Phoenix (formerly Daejeon Citizen and Pohang Steelers).