A rock climber ascends.
The rock climber is attached by ropes and pulleys.
He could ascend without ropes and pulleys.
exists e1 x1 x2.(Actor(e1,x1) & v_ascend(e1) & n_climber(x1) & of(x1,x2) & n_rock(x2))
exists e1 x1 x2 x3 x4 x5.(n_climber(x1) & of(x1,x2) & n_rock(x2) & Actor(e1,x3) & subset_of(x5,x3) & n_pulley(x5) & subset_of(x4,x3) & n_rope(x4) & Theme(e1,x1) & v_attach(e1))