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 like our new history teacher ?  
 Person2:  I'm fed up with his endless talking .  
 Person1:      You can't say that ! He's a very knowledgeable person .  
 Person2:  I can't see it . 

1