A creek runs through the grassy area.
There are fish in the creek.
Not all creeks contain fish.
exists e1 s1 x1 x2.(n_area(x2) & a_grassy(s1) & Theme(s1,x2) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_creek(x1))
exists p1 x1 x2.(n_creek(x2) & in(p1,x2) & exists x3.((x1 = x3) & n_fish(x3)))