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:     Hello , Mary . Why are you standing here in the cold wind ?  
 Person2:  I ’ m waiting for a bus and going for a walk in the park .  
 Person1:      Going for a walk in such a cold weather ?  
 Person2:  I always like to go for a walk before a supper .  
 Person1:      I see . 

1