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 been to Xi ’ an ?  
 Person2:  Yes , I ’ Ve been there several times on business trips . But I have never really seen the terra-cotta warriors as it is outside the city .  
 Person1:      I ’ Ve heard many people saying that it is a place worth touring . I really want to see the old walls and terra-cotta warriors one day . Of course I won ’ t miss the local food either . You know , the sites interests a food in scenery , food is a key factor when visiting a place .  
 Person2:  I agree . As long as the food is not too bizarre once I saw some people eating insects . That is frightening .  
 Person1:      Sure it is . Is it convenient to get there by plane ?  
 Person2:  Well , the airport is quite far from the downtown area , but it is still more convenient than taking the train . 

1