Task: Question Answering
Input (English): Context: I decided that since school starts here tomorrow , it 's time to change my theme from summer to school . It wo n't be long and I 'll be putting up my fall themes . It 's kind of weird to see it getting dark so early . I always think back to Independence Day and it seems to take forever for the sky to get dark enough for fireworks . 
Question: Why is the narrator changing their theme ?
Output (English): Summer is over .