Task: Question Answering
Input (English): Problem: what is the area of an equilateral triangle whose one side length is 80 ? 
Options: a ) 800 √ 3 , b ) 1000 √ 3 , c ) 1200 √ 3 , d ) 1400 √ 3 , e ) 1600 √ 3
Output (English): e