A skier going goes down the mountain.
The female skier goes down the mountain.
Not all skiers are female.
exists e1 e2 x1 x2 x3.(n_mountain(x3) & down(e2,x3) & Actor(e2,x1) & v_go(e2) & Actor(e1,x2) & v_go(e1) & (x1 = x2) & n_skier(x1))
exists e1 s1 x1 x2.(n_mountain(x2) & n_skier(x1) & a_female(s1) & Theme(s1,x1) & down(e1,x2) & Actor(e1,x1) & v_go(e1))