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:     Which is your preference , tea or coffee ?  
 Person2:  My choice would always be tea .  
 Person1:      When did you form this hobby ?  
 Person2:  Last year when I visited China . 

1