A woman with a dog canoe down a river.
A person is in her canoe with her dog.
A woman with her dog is in her canoe
exists x1 x2 x3 x4.(a_topic(x1) & down(x1,x4) & n_river(x4) & with(x1,x2) & n_canoe(x2) & of(x2,x3) & n_dog(x3) & n_woman(x1))
exists p1 x1 x2 x3.(exists x1.(in(x1,x2) & with(x2,x3) & n_female(x1)) & n_dog(x3) & of(x3,x1) & n_canoe(x2) & of(x2,x1) & n_female(x1) & n_person(x1))