Two girls sitting in class.
They are running down hall.
You cannot be both sitting and running.
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_class(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_girl(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(n_thing(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_hall(x2))