A man fishing in a boat with mountains in the background.
The man is  not in an office.
One is not in an office when in a boat with mountains in the background.
exists x1 x2 x3 x4 x5.(n_background(x5) & a_topic(x1) & in(x1,x3) & with(x3,x4) & in(x4,x5) & n_mountain(x4) & n_boat(x3) & n_fishing(x1) & of(x1,x2) & n_man(x2))
exists x1.(n_man(x1) & -exists p1 x2.(in(x1,x2) & n_office(x2)))