A bicyclist is focused on his ride as he passes a lake surrounded by hills.
Bicyclist riding through the hills focused on a lake
He could be focused on many things, not necessarily the lake. And even if he is surrounded by hills, he isn't necessarily riding through the hills.
exists e1 p1 x1 x2.(exists e3 e2 x3 x4 x5.(Theme(e3,x3) & Actor(e3,x1) & v_pass(e3) & Actor(e2,x5) & n_hill(x5) & Theme(e2,x4) & v_surround(e2) & (x3 = x4) & n_lake(x3)) & n_male(x1) & n_male(x1) & as(e1,p1) & on(e1,x2) & n_ride(x2) & of(x2,x1) & Theme(e1,x1) & v_focus(e1) & n_bicyclist(x1))
exists e1 x1 x2 x3 x4.(n_hill(x3) & on(e1,x4) & n_lake(x4) & Actor(e1,x1) & v_focus(e1) & through(x1,x3) & n_riding(x1) & of(x1,x2) & n_bicyclist(x2))