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:     I hear your sister has had an accident , is it true ?  
 Person2:  Yeah , it happened a week ago .  
 Person1:      That's a crying shame . It really is !  
 Person2:  Fortunately , she's not seriously injured . 

1