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:     Where did you go yesterday ? 
 Person2:  I went to play tennis in the public park . 
 Person1:      How often do you play tennis ? 
 Person2:  Twice a week . How about you ? 
 Person1:      I seldom play tennis . I prefer football and basketball . 
 Person2:  But it is very difficult to gather a team of players together . 
 Person1:      I usually play with my schoolmates . 
 Person2:  Do you like watching football matches ? 
 Person1:      Yes , I went to the Than He Sports Center for a football match last Sunday . 
 Person2:  Oh , I watched it on television . It was an exciting match . 

1