Two children in bed sleeping.
Two children are playing tag in the yard
Children cannot be sleeping and playing at the same time.
exists x1 x2 x3.(a_topic(x1) & in(x1,x2) & n_sleeping(x2) & of(x2,x3) & n_bed(x3) & n_child(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_yard(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_tag(x2) & n_child(x1) & card_eq_2(x1))