Task: Question Understanding
Input (English): Context : Born Robert Alton Hart in Bennington, Vermont, Alton studied dance with Ralph McKernan in Springfield, Massachusetts and spent his summers in New York studying with Bert French and Mikhail Mordkin, formerly of the Bolshoi Ballet and Sergey Diaghilev's Ballets Russes. 
Question : What kind of  occupation does Robert Alton have?
Output (English): occupation