three people in black shirts are using a microscope.
Three people are looking through a telescope.
The people cannot be looking through a microscope and a telescope at the same time.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_use(e1) & n_microscope(x3) & in(x1,x2) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_people(x1) & card_eq_3(x1))
exists e1 x1 x2.(through(e1,x2) & n_telescope(x2) & Actor(e1,x1) & v_look(e1) & n_people(x1) & card_eq_3(x1))