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:     Good evening , Mr . Frank . Bourbon on the rocks ?  
 Person2:  No . This time I'll try Chinese wine .  
 Person1:      What about Mao Tai , one of the most famous liquors in China ? It's good indeed . It never goes to the head .  
 Person2:  Do people here drink a lot of liquors ?  
 Person1:      Some do , some don't . Many people in the North are fond of liquors . I think it has something to do with the climate .  
 Person2:  Yes , it has . Some Mexicans are crazy . They drink a lot of liquors even on hot days . Have you ever heard of " Tequila Sauta " ?  
 Person1:      Yes , it's a very well-known kind of spirits in Mexico . People drink it with salt and lemon .  
 Person2:  Right . It's very strong , just like alcohol . ( Frank sips Mao Tai . )  
 Person1:      Yes , besides Mao Tai , we have Wu Liang Ye , Fen Jim and so on .  
 Person2:  They say that Showing wine tastes quite good . What's it ?  
 Person1:      It's rice wine , a kind of still wine , somewhat like Japanese Sake . Showing is a city in China .  
 Person2:  I see .  
 Person1:      By the way , we also have some good red wine and white wine , such as Great Wall White Wine .  
 Person2:  Thank you for telling me so much , I'll try them next time .  
 Person1:      I'm always at your service . 

1