Kato & Brown are fellow graduate students who are on familiar terms. Kato inquires about someone sitting out in the seminar room whom he doesn't know.
Ano gaizin, dare?
Otoko no hito?
Onna no hito da kedo. .
Aa, kanozyo ne? Arubaito no gakusee na n da kedo. .
Who's that foreigner?
I mean the woman, but . . .
(do you see the person I mean?)
Oh, her? (What it is is) she's a student working part-time.
Oh, that's who she is!