A climber is hanging on a rocky ledge high over a bridge.
A climber is trying to complete a climb he has never finished before
Just because a climber is hanging on a rocky ledge high over a bridge doesn't mean the climber is trying to complete a climb has has never finished before. The climber might be climbing a rocky ledge that he has climbed many times before.
exists e1 s1 x1 x2 x3 x4.(on(e1,x2) & over(x2,x4) & n_bridge(x4) & n_high(x2) & of(x2,x3) & n_ledge(x3) & a_rocky(s1) & Theme(s1,x2) & Actor(e1,x1) & v_hang(e1) & n_climber(x1))
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 p2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_complete(e2) & exists e3 s1 s2.(a_never(s2) & Manner(e3,s2) & a_before(s1) & Manner(e3,s1) & Actor(e3,x1) & v_finish(e3)) & that(x2,p2) & n_climb(x2)) & n_male(x1) & n_climber(x1))