A group of people stand by a body of water.
A group of men and women are standing by a lake.
A body of water is not necessarily a lake.
exists e1 x1 x2 x3 x4.(by(e1,x3) & of(x3,x4) & n_water(x4) & n_body(x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3 x4 x5.(by(e1,x5) & n_lake(x5) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_woman(x4) & n_man(x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_group(x1))