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:     Are you sure this is the right restaurant 。 
 Person2:  Positive 。 
 Person1:      You don't think you could be wrong ? 
 Person2:  I'am absolutely sure I'm right . 
 Person1:      I don't know . It looks a little wrong down . 
 Person2:  This is right . There is no doubt in my mind . 
 Person1:      You're hundred percent sure you want to eat here ? 
 Person2:  Check and double check . 

1