Simplify the following text for a Grade 9 native English-speaking person.
Original: Cameron Giles ( born February 4 , 1976 ) , better known by his stage name Cam ` ron or `` Killa Cam '' , is a Grammy-nominated American rapper and actor .
Simplified: Cameron Giles ( born November 15 , 1988 in Harlem , New York ) is an American rapper better known by his stage name , Cam ` ron or Killa Cam .