A crosscountry skier grimaces as he climbs a slight incline.
The skier is skiing down a slope.
He discusses a crosscountry skier going up an incline and a skier going down a slope. The skier cannot do both at the same time.
exists p1 s1 x1 x2.(a_topic(x1) & exists e1 s2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_climb(e1) & n_incline(x3) & a_slight(s2) & Theme(s2,x3)) & n_male(x1) & as(x1,p1) & n_grimace(x1) & of(x1,x2) & n_skier(x2) & a_crosscountry(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_skier(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_ski(e1) & n_slope(x2))