Complex sentence: The Incheon International Airport Railroad airport express (or AREX, and styled as A'REX) station is located in the Transport Centre adjacent to the main terminal building and provides high-speed services to Gimpo Airport and Seoul.
Split into simpler sentences: The Incheon International Airport Railroad airport express (or AREX, and styled as A'REX) station is located in the Transport Centre, adjacent to the main terminal building. It provides high-speed services to Gimpo Airport and Seoul.