Task: Question Answering
Input (English): Problem: a , b , c , d and e are 5 consecutive points on a straight line . if bc = 3 cd , de = 8 , ab = 5 and ac = 11 , what is the length of ae ? 
Options: a ) 15 , b ) 17 , c ) 19 , d ) 21 , e ) 23
Output (English): d