A policeman stands in front of an SUV.
the man is running a train
The policeman cannot be both stand and running a train at the same time.
exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & ne_org_suv(x3) & n_front(x2) & Actor(e1,x1) & v_stand(e1) & n_policeman(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & n_train(x2))