Given the task definition and input, reply with output. You are given a dialog between 2 or more individuals. You need to generate the number of the speaker (e.g. 1 for Speaker 1) who had the most lines in the dialog. If there is a tie, output the answer '0'.

Speaker 1: So Chandler, you're parents must've been thrilled when you told them you were engaged.
Speaker 2: Oh yeah, I should probably call them.
Speaker 3: I remember when we first got engaged.
Speaker 2: Oh, I don't think I ever heard that story.
Speaker 4: Oh dad, really you don't need to...
2