A woman and child sit on the bank of a creek.
There are people by the water.
A woman a child are people, and a creek is water.
exists e1 x1 x2 x3 x4 x5.(n_bank(x4) & on(e1,x4) & of(x4,x5) & n_creek(x5) & Actor(e1,x1) & v_sit(e1) & n_child(x3) & n_woman(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists p1 x1 x3.(n_water(x3) & exists x2.((x1 = x2) & by(x2,x3) & n_people(x2)))