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:     Do you have a park in the city ?  
 Person2:  Yes , there is a lake in the park . It is very beautiful .  
 Person1:      That ’ s great . We can go boating on the lake in the afternoon .  
 Person2:  It ’ s a good idea . But I am afraid it ’ s too cold . It is very windy on the lake .  
 Person1:      Then we can take a walk and enjoy the scenery in the park . 

1