man in a green hat sites on a green bench with snacks.
A man is feeding pigeons while sitting on a bench.
There is a difference between sites and sitting.
exists s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x2) & on(x2,x4) & with(x4,x5) & n_snack(x5) & n_bench(x4) & a_green(s2) & Theme(s2,x4) & n_site(x2) & of(x2,x3) & n_hat(x3) & a_green(s1) & Theme(s1,x2) & n_man(x1))
exists e1 e2 x1 x2 x3.(while(e1,e2) & on(e2,x3) & n_bench(x3) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x2) & Actor(e1,x1) & v_feed(e1) & n_pigeon(x2) & n_man(x1))