Yeah.
you know , it 's like it gets into that kind of thing for  um , but maybe I 'm mixing , you know  this is kind of like the final result after parsing the sentence.
Mm - hmm.
So you might imagine that the information you pass to , you know  in identifying a particular referent would be , " oh , some  " you know , " it 's a guy and it 's someone I know from school ".