A dog in water carrying a long stick.
A dog swims in the water with a stick in its mouth that its owner threw.
There's no indication that the dog swims in the water. The stick isn't always something that the owner threw.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_carry(e1) & n_stick(x4) & a_long(s1) & Theme(s1,x4) & (x1 = x3) & in(x1,x2) & n_water(x2) & n_dog(x1))
exists p1 x1 x2 x3 x4 x5 x6.(Topic(x5,p1) & exists e1.(Actor(e1,x6) & v_throw(e1)) & n_owner(x6) & of(x6,x3) & n_thing(x3) & n_thing(x3) & n_mouth(x5) & of(x5,x3) & n_water(x3) & a_topic(x1) & in(x1,x3) & with(x3,x4) & in(x4,x5) & n_stick(x4) & n_swim(x1) & of(x1,x2) & n_dog(x2))