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:     Does your girl friend like swimming ?  
 Person2:  Yes , she does . She is good at backstroke and free style .  
 Person1:      Then you can help her with the breaststroke and sidestroke .  
 Person2:  But she wants to learn the butterfly stroke  
 Person1:      Really ? Then just ask her to follow me .  
 Person2:  I heard you are now practicing underwater swimming , aren't you ?  
 Person1:      Yes . But I still have some difficulties it breathing .  
 Person2:  Say , kid , keep on practicing , you're sure to be a first-class swimmer .  
 Person1:      To tell you the truth , I have never thought of being a swimmer . I swim just for fun .  
 Person2:  That's good . 

1