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:     Are you sure that this bus will take us to Santa Anita mall ?  
 Person2:  Yes , it will .  
 Person1:      You know that for a fact ?  
 Person2:  Yeah , I take this bus all the time .  
 Person1:      Is it a very long bus ride ?  
 Person2:  It's about thirty minutes long .  
 Person1:      Do you know where we get off at ?  
 Person2:  There's a bus stop right behind Macy's .  
 Person1:      Really , there's a bus stop right by the mall ?  
 Person2:  There's a bus stop in the mall parking lot .  
 Person1:      That's convenient .  
 Person2:  Absolutely . 

1