Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. If the conversation begins with a question, label it '1' otherwise '0'.
Input:  Person1:     Excuse me . Could you please take a picture of us with this camera ?  
 Person2:  Sure . Which button do I press to shoot ?  
 Person1:      This one .  
 Person2:  Do I have to focus it ?  
 Person1:      No , this is a focus-free camera . All you have to do is point and press the button .  
 Person2:  All right . Say cheese ! 

0