A man paddling in water.
The man is on land.
Paddling on land is not possible.
exists x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_water(x3) & n_paddling(x1) & of(x1,x2) & n_man(x2))
exists p1 x1.(n_man(x1) & exists x2.(on(x1,x2) & n_land(x2)))