You can tell because the passage states the thoughts/feelings of multiple characters, while not using "I" or "You" or any other first or second person pronouns.
the, be, to, of, and, a, in, that, have, I, it, for, not, on, with, he, as, you, do, at, this, but, his, by, from, they, we, say, her, she, or, an, will, my, one, all, would, there, their, what, so, up, out, if, about, who, get, which, go, me
