Children dig through dirt.
children change the dress to dirt
Children cannot both dig through the dirt while changing the dress to dirt.
exists x1 x2 x3.(a_topic(x1) & through(x1,x3) & n_dirt(x3) & n_dig(x1) & (x1 = x2) & ne_nam_children(x2))
exists e1 p1 x1 x2 x3.(n_dress(x3) & Topic(e1,p1) & exists e2.(Actor(e2,x1) & v_dirt(e2)) & Theme(e1,x3) & Actor(e1,x2) & v_change(e1) & n_child(x2) & n_child(x1))