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 kind of music do you like ?  
 Person2:  I like popular music best .  
 Person1:      Me too .  
 Person2:  Who is your favorite singer ?  
 Person1:      Qi In is .  
 Person2:  Do you know this song ?  
 Person1:      Yes , I like it very much .  
 Person2:  Let's sing it together , shall we ?  
 Person1:      No problem . 

1