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:     Bill , do you know when did the Chinese begin to celebrate Teachers ' Day ?  
 Person2:  I know the Chinese teachers had their first festival in 1985 .  
 Person1:      So , it is the 27th Teachers ' Day .  
 Person2:  What will you do on Teachers ' Day ?  
 Person1:      I am going to send Mr . Li some flowers . What about you ?  
 Person2:  I intend to invite him to dinner . 

1