A woman prepares a cooked meal.
A woman is vacuuming
One cannot be vacuuming while she prepares a cooked meal.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_prepare(e1) & n_meal(x2) & a_cooked(s1) & Theme(s1,x2) & n_woman(x1))
exists e1 x1.(Actor(e1,x1) & v_vacuum(e1) & n_woman(x1))