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:     What in the world is that smell ?  
 Person2:  The aroma of roasting coffee beans .  
 Person1:      Smells like you're baking something . What are those ?  
 Person2:  Green beans . They pop and turn brown when you roast them .  
 Person1:      Cool ! But isn't that a hot air popcorn popper ?  
 Person2:  This machine roasts the beans just right . If you roast them too long , or the temperature is too hot ...  
 Person1:      The beans will burn . I know . I've tasted burnt coffee before ... yuck ! 

1