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:     Can we go to the beach on foot ? 
 Person2:  Oh , it's too far to walk there.We can take a bus . 
 Person1:      Is the bus station close by ? 
 Person2:  Yeah , it's a block away down the street . 

1