Task: Question Answering
Input (English): Problem: if 2 x + y = 7 and x + 2 y = 5 , then 5 xy / 3 = ? 
Options: a ) a ) 5 , b ) b ) 2 , c ) c ) 17 / 5 , d ) d ) 18 / 5 , e ) e ) 4
Output (English): a