Two boys and two girls, all with brown hair, sitting in a circle playing a game.
Four brown haired kids are playing a game in a circle.
"Two boys and two girls" is another way to say four kids.  Brown hair specifies they are the same children. "Playing a game in a circle" is rephrasing "sitting in a circle playing a game".
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7.(in(e1,x5) & Theme(e2,x7) & Actor(e2,x6) & v_play(e2) & n_game(x7) & (x5 = x6) & n_circle(x5) & Actor(e1,x1) & v_sit(e1) & subset_of(x3,x1) & n_all(x3) & with(x3,x4) & n_hair(x4) & a_brown(s1) & Theme(s1,x4) & n_girl(x3) & card_eq_2(x3) & subset_of(x2,x1) & n_boy(x2) & card_eq_2(x2))
exists e1 s1 s2 x1 x2 x3.(in(e1,x3) & n_circle(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_game(x2) & n_kid(x1) & a_haired(s2) & Theme(s2,x1) & a_brown(s1) & Theme(s1,x1) & card_eq_4(x1))