Task: Question Answering
Input (English): Problem: the compound ratio of 5 : 6 , 3 : 4 and 4 : 5 ? 
Options: a ) 1 : 1 , b ) 1 : 87 , c ) 1 : 6 , d ) 1 : 9 , e ) 1 : 2
Output (English): e