Task: Question Answering
Input (English): Problem: in 1950 , richard was 4 times as old as robert . in 1955 , richard was 3 times as old as robert . in which year was richard 1.5 times as old as robert ? 
Options: a ) 1960 , b ) 1965 , c ) 1970 , d ) 1975 , e ) 2000
Output (English): e