A group is on a canoe on a river.
A few people can be seen on a boat.
A group can constitute a few people and a canoe is a type of boat.
exists p1 x1.(exists x2 x3.(on(x1,x2) & on(x2,x3) & n_river(x3) & n_canoe(x2)) & n_group(x1))
exists e1 p1 s1 x1.(exists e2 x2.(on(e2,x2) & n_boat(x2) & Theme(e2,x1) & v_see(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_can(e1) & n_people(x1) & a_few(s1) & Theme(s1,x1))