Person on a Polaris ski mobile in the snow.
A skier travels through the snow.
A ski mobile is made to travel in snow.
exists s1 s2 x1 x2 x3 x4.(n_snow(x4) & ne_nam_person(s1) & a_topic(s1) & on(s1,x1) & in(x1,x4) & Theme(s2,x3) & a_mobile(s2) & (x1 = x3) & n_ski(x1) & (x1 = x2) & ne_org_polaris(x2))
exists e1 x1 x2.(n_snow(x2) & through(e1,x2) & Actor(e1,x1) & v_travel(e1) & n_skier(x1))