A lonely skier enjoys the slopes on a beautiful day.
A lonely skier is practicing for a competition.
Just because they enjoy the slopes does not mean they are practicing for a competition.
exists e1 s1 s2 x1 x2 x3.(n_slope(x2) & on(e1,x3) & n_day(x3) & a_beautiful(s2) & Theme(s2,x3) & Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & n_skier(x1) & a_lonely(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(for(e1,x2) & n_competition(x2) & Actor(e1,x1) & v_practice(e1) & n_skier(x1) & a_lonely(s1) & Theme(s1,x1))