Definition: You are given a dialog between 2 or more individuals. Within the dialog, there will be clues that indicate two individuals were or are dating. You will be prompted at the end to answer which Speaker (or named individual) is dating which other Speaker (or named individual).
Input: Speaker 1: So what did he decide? Does your Uncle Nathan get an invite or not? 
Speaker 2: Ohh, God, nobody likes him, and he's so cheap, he'd never fly to London in a million years. Yeah, invite him? Hey, did I do these neat enough? 
Speaker 1: Yeah, they're fine. 
Speaker 2: Yeah? 
Speaker 1: If anyone asks, we'll just say Ben addressed them. Oh! So you invited Rachel then? 
Speaker 2: Sure. Why not? 
Speaker 1: Really? 
Speaker 2: Yeah? 
Speaker 1: I don't think I'd be comfortable with any of my old lovers there. 
Speaker 2: Wait-wait-wait, do you, do you think, maybe we shouldn't invite her? 
Speaker 1: Oh, no-no, y'know I absolutely adore Rachel it's just that, well it might be a awkward for you. But it's absolutely your decision. More tea? 
Speaker 2: Yeah sure. 
Speaker 1: Earl Grey? 
Speaker 2: Huh? Yeah, fine, invite whoever you want. Rachel is or was dating which Speaker?
Output:
Speaker 2