premise: A boy and girl child swing together on a swing set.
hypothesis: Two children are playing on a swing set.
explanation_1: A boy and girl child are two children.
explanation_2: Boy and girl child equals two children, and swing together implies playing.
explanation_3: If there is a boy and a girl there are two children.
premise_logic: exists s1 x1 x2 x3 x4 x5 x6.(a_topic(s1) & subset_of(x2,s1) & on(x2,x5) & n_set(x5) & of(x5,x6) & n_swing(x6) & r_together(x2) & n_swing(x2) & of(x2,x4) & n_child(x4) & of(x2,x3) & n_girl(x3) & subset_of(x1,s1) & n_boy(x1))
hypothesis_logic: exists e1 x1 x2 x3.(on(e1,x2) & n_set(x2) & of(x2,x3) & n_swing(x3) & Actor(e1,x1) & v_play(e1) & n_child(x1) & card_eq_2(x1))