a black dog is standing on a step next to a river as it shakes itself dry.
The river is flowing from north to south.
While the river might be flowing from north to south, that's not knowledge that is known just because a dog is nearby shaking itself dry.
exists e1 p1 s1 x1 x2 x3 x4.(exists e2 p2.(exists s2.(Theme(s2,x2) & a_dry(s2)) & Recipient(e2,p2) & Actor(e2,x1) & Topic(e2,x2) & v_shake(e2)) & n_thing(x2) & n_thing(x1) & as(e1,p1) & on(e1,x2) & to(x3,x4) & n_river(x4) & next(x2,x3) & n_thing(x3) & n_step(x2) & Actor(e1,x1) & v_stand(e1) & n_dog(x1) & a_black(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_river(x1) & to(e1,x3) & n_south(x3) & from(e1,x2) & n_north(x2) & Actor(e1,x1) & v_flow(e1))