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:     Wait a moment , I would like to take some snapshots here .  
 Person2:  Is that OK ?  
 Person1:      It's so beautiful here . I want to stay longer .  
 Person2:  Well , I think we'd better go now . We have to follow the guide .  
 Person1:      That's all right . 

0