Task: Question Answering
Input (English): Problem: the breath of a rectangular landscape is 6 times its length . there is a playground in it whose area is 4200 square mtr & which is 1 / 7 th of the total landscape . what is the breath of the landscape ? 
Options: a ) 520 , b ) 420 , c ) 320 , d ) 550 , e ) 450
Output (English): b