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:     The road ahead is blocked . There might have been an accident .  
 Person2:  Are there many accidents in the city every day ?  
 Person1:      Not really , but they are on the rise .  
 Person2:  Please drive slowly , we've got lots of time . Safety first . 

0