Who created the Camelot musical and wrote the screenplay for the Camelot film adaptation? 
Camelot (film):  The film is an adaptation of the homonymous musical by Alan Jay Lerner and Frederick Loewe. Camelot (film):  Lerner also wrote the screenplay. Camelot (musical): Camelot is a musical by Alan Jay Lerner (book and lyrics) and Frederick Loewe (music).
Alan Jay Lerner