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:     Do you know that Mary ’ s marriage is on the rocks ? 
 Person2:  Really ? I ’ Ve never heard of it ! 
 Person1:      I saw her husband have it out with her yesterday . 
 Person2:  I think Mary must be sad , because she loves her husband very much . 

1