Three men are looking at a sign on a cross in a canyon.
Some people are reading a sign on an elevator.
The men can't be in a canyon and  at an elevator at the same time.
exists e1 x1 x2 x3 x4.(at(e1,x2) & on(x2,x3) & in(x3,x4) & n_canyon(x4) & n_cross(x3) & n_sign(x2) & Actor(e1,x1) & v_look(e1) & n_man(x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_read(e1) & on(x2,x3) & n_elevator(x3) & n_sign(x2) & n_people(x1))