A woman and child sit on the bank of a creek.
A mother and child are fishing.
A woman and child does not imply a mother and child and sit on the bank of a creek does not imply fishing.
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 x2 x3.(exists x4.((x1 = x4) & n_fishing(x4)) & n_child(x3) & n_mother(x2) & subset_of(x3,x1) & subset_of(x2,x1))