Task: Question Answering
Input (English): Context: The only person I know who is more moody than me is my mother . And I was thinking about her symtpoms , and she could completely be bipolar . This revelation hit me last night as I was on the phone with her and she was freaking out , speaking very fast , being extremely negative about my job interview today saying it wo n't work out and the kids are going to suffer . 
Question: What 's a possible reason the writer 's mother is bipolar ?
Output (English): Because she experiences intense emotions .