The skier is jumping over a snowy mound in front of a pine tree.
A person is out in the cold and snow, wearing sports equipment.
A skier is only found in a cold environment, and must have skis to be a skier.
exists e1 s1 s2 x1 x2 x3 x4 x5.(n_skier(x1) & in(e1,x3) & of(x3,x4) & n_tree(x4) & of(x4,x5) & n_pine(x5) & n_front(x3) & a_over(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_mound(x2) & a_snowy(s1) & Theme(s1,x2))
exists e1 p1 s1 s2 x1 x2 x3 x4.(n_snow(x4) & a_cold(s2) & Theme(s2,x4) & for(p1,e1) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_equipment(x2) & of(x2,x3) & n_sport(x3) & a_out(s1) & Manner(p1,s1) & in(x1,x4) & n_person(x1))