A brown dog walks on the rocks near a river.
Brown dog is searching for its owner near the river.
Just because a dog walks on the rocks near a river doesn't imply dog is searching for its owner.
exists e1 s1 x1 x2 x3.(n_rock(x2) & on(e1,x2) & near(x2,x3) & n_river(x3) & Actor(e1,x1) & v_walk(e1) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(n_river(x3) & for(e1,x2) & near(x2,x3) & n_owner(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_search(e1) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))