Task: Question Answering
Input (English): Problem: 4 men and 3 women are lined up in a row . what is the number of cases where they stand with each other in turn ? ( the number of cases in which men ( or women ) do not stand next to each other ) 
Options: a ) 12 , b ) 144 , c ) 18 , d ) 21 , e ) 24
Output (English): b