A couple sitting in front of a computer screen.
A couple eating dinner in their bed
They cant be eating in bed if they are sitting in front of computer screen
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & in(e1,x3) & of(x3,x4) & n_screen(x4) & of(x4,x5) & n_computer(x5) & n_front(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_couple(x1))
exists e1 x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_bed(x3) & of(x3,x1) & n_thing(x1) & n_dinner(x1) & Actor(e1,x1) & v_eat(e1) & of(x1,x2) & n_couple(x2))