A man in a brown shirt sitting down.
The man has sat down on the park bench.
Although he is sitting down, it does not imply it is on a park bench.
exists e1 s1 s2 x1 x2 x3.(a_topic(x1) & in(x1,x2) & a_down(s2) & Manner(e1,s2) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_shirt(x2) & a_brown(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 x1 x2 x3.(n_bench(x2) & of(x2,x3) & n_park(x3) & n_man(x1) & on(e1,x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1))