Simplify the following text for a Grade 7 native English-speaking person.
Original: Giuseppe Piero Grillo , better known as Beppe Grillo ( born 21 July 1948 ) , is an Italian activist , blogger , comedian , actor and politician , who also works in theaters and television .
Simplified: Giuseppe Piero Grillo , better known as Beppe Grillo ( born July 21 , 1948 ) , is an Italian comedian and actor . He has worked in theaters and television .