Task: Question Answering
Input (English): Problem: a , b , c , d and e are 5 consecutive points on a straight line . if bc = 2 cd , de = 7 , ab = 5 and ac = 11 , what is the length of ae ? 
Options: a ) 19 , b ) 21 , c ) 23 , d ) 25 , e ) 27
Output (English): b