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:     Is this watch yours ?  
 Person2:  No , it isn't mine . I blundered upon it under the sofa . Do you know whose watch it is ?  
 Person1:      Let me have a look . It's mine . I have been looking for it , but just cannot find it . It's present from my father .  
 Person2:  Well , here you are . Remember to put it in a proper place . 

1