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:     What's your favorite magazine ?  
 Person2:  Off hand , I'd say the Reader's Digests is my favorite .  
 Person1:      What kind of magazine is it ?  
 Person2:  It's instructive and inspiring .  
 Person1:      Really ? It is a weekly , isn't it ?  
 Person2:  No , it's a semimonthly .  
 Person1:      Does it enjoy popularity among the young generation ?  
 Person2:  Yes , it's so popular that it's sold out as soon as it reaches the bookstores .  
 Person1:      Oh , I think I should try to read one . 

1