A man walking across the street on the road that says "keep clear".
A man is walking across the ocean.
A man can't be walking if he's in the ocean.
exists e2 e1 p1 x1 x2 x3 x4 x5.(n_road(x4) & n_street(x3) & a_topic(x1) & exists e3 p2.(exists s1.(Theme(s1,x5) & a_clear(s1)) & Topic(e3,p2) & Actor(e3,x5) & v_keep(e3)) & Topic(e2,p1) & Actor(e2,x5) & v_say(e2) & (x1 = x5) & on(e1,x4) & across(e1,x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_ocean(x2) & across(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_man(x1))