An African woman makes pots.
A woman is stomping an anthill.
One can't be stomping an anthill and making pots.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_pot(x2) & n_woman(x1) & a_african(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_stomp(e1) & n_anthill(x2) & n_woman(x1))