A skier navigates his path downhill.
The skier is good at skiing.
A skier can navigate their path downhill without being good at skiing.
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 s1 x1 x2.(n_skier(x1) & at(s1,x2) & n_skiing(x2) & Theme(s1,x1) & a_good(s1))