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:     Ann invited us to dinner this saturday afternoon .  
 Person2:  What should we take ?  
 Person1:      How about a china vase ?  
 Person2:  Good idea ! 

0