A person looks through a telescopes viewfinder during the daytime.
Someone is looking through a telescope.
"Someone is looking through a telescope" is another way to say that "a person looks through a telescope".  Both phrases have the same meaning.
exists e1 x1 x2 x3 x4.(n_daytime(x4) & during(e1,x4) & through(e1,x2) & n_viewfinder(x2) & of(x2,x3) & n_telescope(x3) & Actor(e1,x1) & v_look(e1) & n_person(x1))
exists e1 x1 x2.(through(e1,x2) & n_telescope(x2) & Actor(e1,x1) & v_look(e1) & n_person(x1))