Task: Question Answering
Input (English): Problem: a can finish a work in 4 days and b can do same work in half the time taken by a . then working together , what part of same work they can finish in a day ? 
Options: a ) 1 / 4 , b ) 1 / 6 , c ) 1 / 7 , d ) 3 / 4 , e ) none of these
Output (English): d