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 Q-Duck ? I remember it was around the second intersection of this street .  
 Person2:  Q-Duck ? Do you mean the famous roast-duck store ?  
 Person1:      Yes , definitely .  
 Person2:  They have moved to some other places long time ago .  
 Person1:      Wow , this place is quite different from ten years ago when I first came to China .  
 Person2:  Yeah , a lot of changes have happened here .  
 Person1:      This street used to have few stores . But now , you can see supermarkets , shopping malls and department stores everywhere .  
 Person2:  Yeah , they are my wife's heaven , but not mine . I always get lost in the supermarket .  
 Person1:      Me too ! I was lost three times ten years ago . There were no English directions then .  
 Person2:  Is that better now ?  
 Person1:      Yeah , there are many English signs , and wrong spellings as many as them . 

1