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:     Mom ?  
 Person2:  Mm ?  
 Person1:      Can my friend , Tom Mitchum , come home with me for lunch tomorrow ?  
 Person2:  Of course , Jim . Have I met Tom before ?  
 Person1:      Mm — hmm . You met him last summer . He is small and very smart .  
 Person2:  Oh , yes . I remember Tom . His family comes from Maine , right ?  
 Person1:      Yes . 

1