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:     Hello , Jane . What do you do in your spare time ?  
 Person2:  Well , nothing special , reading , watching TV , walking , and so on .  
 Person1:      Don't you have any hobbies , like stamp collecting or things like that ?  
 Person2:  No , I don't have any hobbies . How about you ?  
 Person1:      I like collecting antiques . It's expensive , but it's a lot of fun .  
 Person2:  Really ? How many collections do you have ?  
 Person1:      So far I have more than 500 collections .  
 Person2:  Among those collections , which is the most expensive ?  
 Person1:      A set of ancient china . It is really invaluable . 

1