Task: Question Answering
Input (English): I knew they would come fighting back and sure enough , that is exactly what they did . They began to whittle away at the large lead Sendai had built and before long , they were only down by 6 going into a timeout . It was at this point that my future wife and her friends came out onto the court waving towels and trying to get the crowd to do so . Shannon , having brought a towel with her , started waving it . 
Question: What may have caused Shannon to start waving the towel ?
Output (English): Other people were doing it .