Task: Question Answering
Input (English): Question: 1/3 +1/2 - 5/6 + 1/5 + 1/4 - 9/20 -1=

 Option A: 1

 Option B: 2/15

 Option C: 2/5

 Option D: 9/20

 Option E: 5/6
Output (English): Option A