Two adults and two children pose on a park bench.
Two adults and two children pose on a park bench while someone takes a picture.
To pose does not imply someone takes a picture.
exists e1 x1 x2 x3 x4 x5.(on(e1,x4) & n_bench(x4) & of(x4,x5) & n_park(x5) & Actor(e1,x1) & v_pose(e1) & n_child(x3) & card_eq_2(x3) & n_adult(x2) & subset_of(x3,x1) & subset_of(x2,x1) & card_eq_2(x1))
exists e1 p1 x1 x2 x3 x4 x5.(exists e2 x6 x7.(Theme(e2,x7) & Actor(e2,x6) & v_take(e2) & n_picture(x7) & n_person(x6)) & while(e1,p1) & on(e1,x4) & n_bench(x4) & of(x4,x5) & n_park(x5) & Actor(e1,x1) & v_pose(e1) & n_child(x3) & card_eq_2(x3) & n_adult(x2) & subset_of(x3,x1) & subset_of(x2,x1) & card_eq_2(x1))