A woman skates while others run on a path.
A woman skates upside down.
If she skates, it can't be upside down.
exists e1 p1 x1.(exists e2 x2 x3.(on(e2,x3) & n_path(x3) & Actor(e2,x2) & v_run(e2) & -(x2 = x1) & n_person(x2)) & n_person(x1) & while(e1,p1) & Actor(e1,x1) & v_skate(e1) & n_woman(x1))
exists e1 p1 x1.(exists s1.(r_upside(s1) & Theme(s1,x1) & a_down(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_skate(e1) & n_woman(x1))