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:     Look ! Someone is celebrating his birthday . 
 Person2:  This must be his 21st birthday . No doubt about it . 
 Person1:      Why ? Do you know that guy ? 
 Person2:  No . Well , in America , 21 is the age when you're allowed to drink . So , many guys celebrate it in bars . 
 Person1:      That's interesting . But it would be really expensive , I suppose . Just think about all the drinks . 
 Person2:  No . If it's your birthday , then you don't need to pay a cent . Just blow out the candles and open the gifts . That makes the birthday a special day . Your friends will take care of everything . 
 Person1:      Wow . That's wonderful . 
 Person2:  What about in China ? What'd you do to celebrate your birthday ? 
 Person1:      Nowadays , it's no difference from America . But in old times , we have traditional ways to celebrate it . 

0