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:     Crazy ! He locked himself in the room .  
 Person2:  I think he was locked in it .  
 Person1:      But you can see the key in his hand through the window !  
 Person2:  What a strange guy ! 

0