A woman is climbing up a steep mountain over water.
women is climbing
A woman is climbing is the subject of the sentence.
exists e1 s1 s2 x1 x2 x3.(over(e1,x3) & n_water(x3) & a_up(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_mountain(x2) & a_steep(s1) & Theme(s1,x2) & n_woman(x1))
exists e1 x1.(Actor(e1,x1) & v_climb(e1) & n_woman(x1))