Simplify the following text for a Grade 7 native English-speaking person.
Original: George Denis Patrick Carlin ( May 12 , 1937 â `` June 22 , 2008 ) was an American stand-up comedian , social critic , actor and author , who won five Grammy Awards for his comedy albums .
Simplified: George Carlin ( May 12 , 1937 â `` June 22 , 2008 ) was an American actor and comedian .