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:     What ’ s the difference between football and rugby ?  
 Person2:  Those tow games are quite different . First , there ’ s the size of the teams . In football , a team has 11 players . In rugby there are 15 players on each team . The biggest difference is that in football , only the goalkeeper can use his hands . In rugby , the ball is usually carried forward by players , though kicking is permitted .  
 Person1:      In rugby , players pass the ball by throwing it to team mates , don ’ t they ?  
 Person2:  That ’ s right . However , players can only pass the ball backwards . They cannot pass the ball forwards to their team mates . That ’ s a foul .  
 Person1:      I know how goals are scored in football , but how about in rugby ?  
 Person2:  If a team carries the ball over the goal line , they score points . A team can also score points by kicking the ball between two tall posts at each end of the pitch .  
 Person1:      There ’ s a lot more physical contact in rugby , isn ’ t there ?  
 Person2:  Yes . Players usually need to bring a player down to stop him from moving forward with the ball . This is called ” tackling ” , as in football .  
 Person1:      The ball is a different shape in rugby , isn ’ t it ?  
 Person2:  Yes . It ’ s not perfectly round like a football . A rugby ball is oval in shape . There ’ s a match on TV this afternoon . Why don ’ t you watch it with me ? I ’ ll try to explain the rules and tactics while we ’ re watching .  
 Person1:      Ok . 

1