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:     Have you ever noticed that serious pollution in modern cities goes from bad to worse ? 
 Person2:  You said it . We ’ er breathing poisonous air every day . 
 Person1:      I think it ’ s time for the government to take strong action . And people should try to protect environment . 
 Person2:  I absolutely agree with you . 

1