Task: Question Answering
Input (English): Context: haha ... great times . in closing on saturday night , a certain vase from a certain lobby just happened to fall into the backpack that i was wearing and managed to come home with us that evening . oh and we went to this 24/7 burger king and as we pull up , the operator person says , we 're closed , we 're only serving breakfast . come back in thirty minutes to get burgers . 
Question: What is the reason a certain vase fell into the backpack ?
Output (English): I stole it .