An African woman makes pots.
An African woman is dancing by the fire.
A woman cannot make pots while dancing.
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 s1 x1 x2.(n_fire(x2) & by(e1,x2) & Actor(e1,x1) & v_dance(e1) & n_woman(x1) & a_african(s1) & Theme(s1,x1))