Task: Question Answering
Input (English): Problem: a large field of 700700 hectares is divided into two parts . the difference of the areas of the two parts is one - fifth of the average of the two areas . what is the area of the smaller part in hectares ? 
Options: a ) 400 , b ) 365 , c ) 385 , d ) 315 , e ) 355
Output (English): d