Task: Question Answering
Input (English): Problem: two family reunions are happening at the same hotel , the oates reunion and the yellow reunion . all 100 guests at the hotel attend at least one of the reunions . if 42 people attend the oates reunion and 65 people attend the yellow reunion , how many people attend both reunions ? 
Options: a ) 2 , b ) 7 , c ) 10 , d ) 16 , e ) 22
Output (English): b