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:     My goodness ! What happened ? You have blood on your face .  
 Person2:  Oh , don't worry . I just killed a pigeon .  
 Person1:      How could you have the heart to kill it ? We only have one !  
 Person2:  It spoiled my painting ! 

1