Two children on one swing at a park with other children.
Five children on one slide at a park with other children.
There can be two or five children. The children can be on a swing or a slide. There are different areas of the park.
exists x1 x2 x3 x4.(a_topic(x1) & on(x1,x2) & at(x2,x3) & with(x3,x4) & -(x4 = x1) & n_child(x1) & n_child(x1) & n_child(x4) & n_park(x3) & n_swing(x2) & card_eq_1(x2) & card_eq_2(x1))
exists x1 x2 x3 x4.(a_topic(x1) & on(x1,x2) & at(x2,x3) & with(x3,x4) & -(x4 = x1) & n_child(x1) & n_child(x1) & n_child(x4) & n_park(x3) & n_slide(x2) & card_eq_1(x2) & card_eq_5(x1))