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:     Do you see the woman ? Is she a teacher ?  
 Person2:  Yes , she is .  
 Person1:      Does she teach Chinese ?  
 Person2:  No , she is an English teacher .  
 Person1:      And who ’ s the man in the green beside her ?  
 Person2:  You mean the man wearing jeans ? He ’ s her little brother . 

1