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:     Did you ever take History 231 ?  
 Person2:  Yeah . Last semester .  
 Person1:      Who was the professor ?  
 Person2:  It was Professor Johnson .  
 Person1:      I have him this semester . What do you think about him ?  
 Person2:  He's a terrible instructor and demands a lot , but fortunately , he's an easy grader .  
 Person1:      What did you end up getting ?  
 Person2:  I got an A - . Sounds good , but none of my test scores were that high , so I don't know how I got a decent grade .  
 Person1:      That's probably because he grades on a curve .  
 Person2:  Are you enjoying the class so far ?  
 Person1:      I hate it and I was about to withdrawal . But after hearing your experience , I think I will tough it out .  
 Person2:  Yes . Definitely stay in the class . You will get a better grade than your test scores . He does that deliberately to make all the students study a lot .  
 Person1:      Thanks for letting me know . I feel relieved now . 

1