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:     So what kind of music turns you on ? 
 Person2:  Rock'n'Roll , I guess . 
 Person1:      You mean the kind of stuff like Nirvana ? 
 Person2:  Not really . That ’ s pretty heavy metal . 

1