A man with helmet and backpack standing on dirt bike in a hilly grassy area.
A man sits at a park bench.
The man can not be standing on a bike and sitting at the same time.
exists s1 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(x1) & with(x1,x2) & subset_of(x4,x2) & on(x4,x6) & in(x6,x8) & n_area(x8) & a_grassy(s1) & Theme(s1,x8) & r_hilly(x8) & n_bike(x6) & of(x6,x7) & n_dirt(x7) & n_standing(x4) & of(x4,x5) & n_backpack(x5) & subset_of(x3,x2) & n_helmet(x3) & n_man(x1))
exists e1 x1 x2 x3.(at(e1,x2) & n_bench(x2) & of(x2,x3) & n_park(x3) & Actor(e1,x1) & v_sit(e1) & n_man(x1))