Complex sentence: In early 2008, Rihanna unveiled a new song titled "Take a Bow", which premiered on February 14,2008 on the KIIS-FM radio show "On Air with Ryan Seacrest".
Split into simpler sentences: In early 2008, Rihanna unveiled a new song titled "Take a Bow". The song premiered on February 14,2008 on the KIIS-FM radio show "On Air with Ryan Seacrest".