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:     Victoria , you are back from vacation ! How was it ?  
 Person2:  To tell the truth , I feel tired .  
 Person1:      How come ?  
 Person2:  I had to visit all my relatives . 

1