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:     Joseph , who is that woman ?  
 Person2:  That's Susan .  
 Person1:      What does she do for work ?  
 Person2:  She's a lawyer .  
 Person1:      Is she American ?  
 Person2:  No , but she speaks English fluently .  
 Person1:      She's really tall . Do you know her ?  
 Person2:  Yes , I know her . We're friends .  
 Person1:      Who's that man standing next to her ?  
 Person2:  Which man ?  
 Person1:      That short guy on her right . What's his name ?  
 Person2:  Oh , that's Matt .  
 Person1:      He's really good looking .  
 Person2:  Yeah .  
 Person1:      Do you know him ?  
 Person2:  I don't know him , but I think my sister does .  
 Person1:      Is he married ?  
 Person2:  Yes , he's married .  
 Person1:      I remember now . I met him before . 

1