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:     Do you know how the national flag of Canada looks like ?  
 Person2:  I don't know .  
 Person1:      There is a maple leaf on the flag . 

1