A man standing on a deck above a lake or river.
The man is hiking across a dry desert.
One can be either standing or hiking, and a lake is different than a desert.
exists e1 x1 x2 x3.(a_topic(x1) & (exists x4.(above(e1,x4) & n_lake(x4)) | exists x5.(above(e1,x5) & n_river(x5))) & on(e1,x3) & n_deck(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2.(n_man(x1) & across(e1,x2) & n_desert(x2) & a_dry(s1) & Theme(s1,x2) & Actor(e1,x1) & v_hike(e1))