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'.

Ex Input:
Person1: Mr . Bellow , have you anything in mind as to what to drink or may I make a few suggestions ?
Person2: I have had enough gin fizz and bloody mary . But I have no idea about Chinese cocktails .
Person1: Would you prefer our cocktail Shanghai cocktail ? It's a mixture of real Chinese ingredients .
Person2: That ' s good .
Person1: ( The waiter makes the cocktail for Mr . Bellow and hands into him . ) Here is your Shanghai cocktail , Mr . Bellow .
Person2: Thank you . Oh , it tastes excellent .

Ex Output:
1

Ex Input:
Person1: Hello , Helen .
Person2: Hi , Steven .
Person1: How are you today ?
Person2: I ' m very well , Thank you . And you ?
Person1: I ' m fine , thanks . How is Tony ?
Person2: He ' s fine , Thanks . How ' s Emma ?
Person1: She ' s very well , too , Helen . Goodbye , Helen . Nice to see you .
Person2: Nice to see you , too , Steven . Goodbye .

Ex Output:
0

Ex Input:
Person1: The band is pretty good . How do you like the music ?
Person2: It's very nice . I haven't heard live music in a while . This is fun .
Person1: Well , then , may I invite you for the next dance ?
Person2: Of course . But I'm afraid I'm not much of a dancer ...
Person1: Don't worry . I'm not much of a dancer myself .
Person2: You're dancing so well .
Person1: You dance beautifully too .
Person2: When did you learn to dance ?
Person1: In college . But I don't dance very often . What's your favourite dance ?
Person2: It's hard to say . It depends . But I love the waltz .

Ex Output:
1