A skier navigates his path downhill.
A skier goes downhill
When a skier navigates his path downhill, the skier is going downhill.
exists e1 x1 x2 x3.(Time(e1,x3) & n_downhill(x3) & Theme(e1,x2) & Actor(e1,x1) & v_navigate(e1) & n_path(x2) & of(x2,x1) & n_male(x1) & n_skier(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_go(e1) & n_downhill(x2) & n_skier(x1))