Dog fetching a stick in the lake.
A golden retriever swims to a stick.
Not all dogs are golden retrievers.  The dog may run on a pier instead of being a dog that swims.
exists e1 x1 x2 x3.(n_lake(x3) & ne_nam_dog(x1) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_fetch(e1) & n_stick(x2))
exists e1 s1 x1 x2.(to(e1,x2) & n_stick(x2) & Actor(e1,x1) & v_swim(e1) & n_retriever(x1) & a_golden(s1) & Theme(s1,x1))