Dog swimming in the water with a stick.
A dog is swimming
A dog swimming is a dog swimming.
exists x1 x2 x3 x4.(n_water(x3) & a_topic(x1) & in(x1,x3) & with(x3,x4) & n_stick(x4) & n_swimming(x1) & (x1 = x2) & ne_nam_dog(x2))
exists e1 x1.(Actor(e1,x1) & v_swim(e1) & n_dog(x1))