A mountain biker with a backpack crests a ridge.
The experienced biker crested the ridge with ease.
There is nothing about the biker cresting a ridge that implies the person is experienced or that they are doing so with ease.
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_crest(e1) & n_ridge(x4) & with(x1,x3) & n_backpack(x3) & n_biker(x1) & of(x1,x2) & n_mountain(x2))
exists e1 s1 x1 x2 x3.(n_ridge(x2) & n_biker(x1) & a_experienced(s1) & Theme(s1,x1) & with(e1,x3) & n_ease(x3) & Theme(e1,x2) & Actor(e1,x1) & v_crest(e1))