Children are canoeing on a beautiful lake.
Three kids in a canoe
Children does not only imply three kids.
exists e1 s1 x1 x2.(on(e1,x2) & n_lake(x2) & a_beautiful(s1) & Theme(s1,x2) & Actor(e1,x1) & v_canoe(e1) & n_child(x1))
exists x1 x2.(a_topic(x1) & in(x1,x2) & n_canoe(x2) & n_kid(x1) & card_eq_3(x1))