A downhill skier races near trees.
A person is surrounded by snow
A skier refers to a person.
exists s1 x1 x2 x3.(a_topic(x1) & near(x1,x3) & n_tree(x3) & n_race(x1) & of(x1,x2) & n_skier(x2) & a_downhill(s1) & Theme(s1,x1))
exists e1 x1 x2.(Actor(e1,x2) & n_snow(x2) & Theme(e1,x1) & v_surround(e1) & n_person(x1))