The Climber trying to climb the big rock
The climber is sitting on top of the mountain.
One cannot climb a big rock if one is already sitting on top of a mountain.
exists e1 p1 s1 s2 x1 x2.(n_rock(x2) & a_big(s2) & Theme(s2,x2) & ne_nam_climber(s1) & a_topic(s1) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_climb(e2)) & (s1 = x1))
exists e1 x1 x2 x3.(n_mountain(x3) & n_climber(x1) & on(e1,x2) & of(x2,x3) & n_top(x2) & Actor(e1,x1) & v_sit(e1))