A man on a motorized bike rides across a dirt road.
A man is walking somewhere.
A man on a motorized bike rides across a dirt road can not be walking.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & on(x1,x2) & across(x2,x4) & n_road(x4) & of(x4,x5) & n_dirt(x5) & n_ride(x2) & of(x2,x3) & n_bike(x3) & Theme(e1,x2) & v_motorize(e1) & n_man(x1))
exists e1 x1 x2.(Location(e1,x2) & n_location(x2) & Actor(e1,x1) & v_walk(e1) & n_man(x1))