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:     Have you met John recently ? 
 Person2:  I saw him last week . It seems he was a bit queer in the head . 
 Person1:      Yes , he has been like that since his accident . 
 Person2:  What a pity ! 

1