Two children are among several other people and playing a game on the Wii.
Children are playing tennis on the Wii.
Playing a game is more general than playing tennis. Tennis is a kind of game, but there are games besides tennis.
exists p1 x1 x4 x7.(ne_geo_wii(x7) & n_people(x4) & exists e1 s1 x2 x3 x5 x6.(among(x1,x2) & subset_of(e1,x2) & Theme(e1,x6) & Actor(e1,x5) & v_play(e1) & on(x6,x7) & n_game(x6) & n_thing(x5) & subset_of(x3,x2) & -(x3 = x4) & n_people(x3) & a_several(s1) & Theme(s1,x3)) & n_child(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(ne_geo_wii(x3) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_tennis(x2) & n_child(x1))