Task: Question Answering
Input (English): I left early from work with a migraine today . I hadn't had one since college , and in high school I had one about every six months . The onset of symptoms are the worst - first , you have a splitting headache . No worries , I took some Aleve that I had in my cabinet in the office . Didn't work . It's the sense of your mind fighting against you , maddening and frightening at the same time . 
Question: What may have been your reason for leaving work early ?
Output (English): I was feeling pain .