Snow skier skiing down a course of snow.
the skier is heading down the course
Heading down is another way of expressing skiing down.
exists x1 x2 x3 x4 x5.(a_topic(x1) & down(x1,x4) & of(x4,x5) & n_snow(x5) & n_course(x4) & n_skiing(x1) & of(x1,x3) & n_skier(x3) & (x1 = x2) & ne_nam_snow(x2))
exists e1 s1 x1 x2.(n_course(x2) & n_skier(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_head(e1))