A man walking in brush with a big orange backpack.
A man riding the subway.
The man cannot be walking if he is riding the subway.
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x3) & with(x3,x4) & n_backpack(x4) & of(x4,x5) & n_orange(x5) & a_big(s1) & Theme(s1,x4) & n_brush(x3) & n_walking(x1) & of(x1,x2) & n_man(x2))
exists e1 x1 x2 x3.(n_subway(x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & (x1 = x2) & n_man(x1))