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:     Excuse me , where is the Beijing Railway Station ?  
 Person2:  You can take the subway to get there .  
 Person1:      How long will it take to get there ?  
 Person2:  It takes only ten minutes .  
 Person1:      May I take a bus or a taxi to get there ?  
 Person2:  You can take No . I bus or a taxi .  
 Person1:      Excuse me , sir . Where is the No . 1 bus stop ?  
 Person2:  Please turn right at the traffic lights .  
 Person1:      Thank you very much . 

1