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:     Oh , Ralph , I heard it is very dangerous traveling in space . Disasters have happened before . If the spaceship were out of order . . . 
 Person2:  You should be optimistic about this . Things have taken a good turn . You should remember that less than two centuries ago the dangers of train travel seemed similarly terrible . 
 Person1:      But is it possible that travelers could be hit by meteors ? 
 Person2:  It's once in blue moon . 
 Person1:      What do you think is the real danger man faced in space ? 
 Person2:  The main one is radiation . There are two sorts of radiation man must fear in space . The first is radiation from the sun , and this is particularly dangerous when the sun is very active and explosions are occurring on its surface . The second , less harmful , comes from the so-called Van Allen Belts . 

0