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:     How ’ re you today ?  
 Person2:  Pretty good , thanks . And you ?  
 Person1:      What ’ s the main idea in this essay ?  
 Person2:  The United Nations should have more authority . 

1