Simplify the following text for a Grade 4 native English-speaking person.
Original: Pierce Brendan Brosnan , OBE ( 16 May 1953 ) is an Irish actor , film producer and environmentalist who holds Irish and American citizenship . After leaving school at 16 , Brosnan began training in commercial illustration , but trained at the Drama Centre in London for three years .
Simplified: Pierce Brosnan ( born 16 May 1953 ) is an Irish actor .