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:     Did you know Carl is almost fifty ?  
 Person2:  Are you sure ? He doesn't look that old .  
 Person1:      He told me so himself . 

1