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:     Can you tell Bob from Tom ?  
 Person2:  How can I ? They're as alike as two peas in a pod .  
 Person1:      Don't you notice that Bob has a mole on his face , but Tom does not .  
 Person2:  You really have keen eyes . 

1