A person standing on a ridge in the desert.
The person is standing atop the highest ridge in the desert.
If someone is standing atop a ridge it means that they are standing on top of the ridge.
exists e1 x1 x2 x3 x4.(n_desert(x4) & a_topic(x1) & in(e1,x4) & on(e1,x3) & n_ridge(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_person(x1))
exists e1 s1 x1 x2 x3.(n_desert(x3) & n_ridge(x2) & r_most(s1) & a_highest(s1) & Theme(s1,x2) & n_person(x1) & atop(e1,x2) & in(x2,x3) & Actor(e1,x1) & v_stand(e1))