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:     Has Alan shown up yet ?  
 Person2:  Nope . I guess something might have come up .  
 Person1:      I wonder what happened .  
 Person2:  I don't know . I hope it's nothing serious .  
 Person1:      Last week his sister was admitted to the hospital .  
 Person2:  Oh ? What happened ?  
 Person1:      His sister had a car accident last week .  
 Person2:  Is she fine now ?  
 Person1:      She is still in a coma .  
 Person2:  Oh , poor Alan ! His sister is the only one he has left since his parents died last year . 

1