Task: Question Answering
Input (English): Context: My sister and I are at work with our mom , and she 's painting some school a few towns away . My sister have been working on our summer reading since like six o'clock in this tiny classroom with a computer , which I hacked into , by the way , hehehehe . But yeah , we went to tell her something , and she said " Does n't it smell like fall outside ? ". 
Question: What is the possible reason for it smelling like fall outside ?
Output (English): Because it is the beginning of fall .