Task: Question Answering
Input (English): Problem: the compound ratio of 1 : 4 , 2 : 5 and 1 : 6 ? 
Options: a ) 1 : 3 , b ) 1 : 4 , c ) 1 : 10 , d ) 1 : 30 , e ) 1 : 60
Output (English): e