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:     You'd better prepare for the examination . 
 Person2:  I don't think the exam will be very hard . 
 Person1:      You should change your attitude , or you will not pass the course . 
 Person2:  Maybe you're right . I have been too lazy lately . 

0