premise: A group of girls in matching brown dresses and sandals dance in unison.
hypothesis: The girls and boys dance.
explanation_1: The group cannot simultaneously be girls and girls and boys
explanation_2: There are no boys in a group of girls.
explanation_3: The subject is either a group of girls or girls and boys.
premise_logic: exists e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(x1) & in(e1,x8) & n_unison(x8) & Theme(e1,x4) & Actor(e1,x3) & v_match(e1) & n_dance(x6) & of(x6,x7) & n_sandal(x7) & n_dress(x5) & subset_of(x6,x4) & subset_of(x5,x4) & a_brown(s1) & Theme(s1,x4) & (x1 = x3) & of(x1,x2) & n_girl(x2) & n_group(x1))
hypothesis_logic: exists s1 x1 x2 x3.(n_dance(x2) & of(x2,x3) & n_boy(x3) & n_girl(x1) & subset_of(x2,s1) & subset_of(x1,s1) & a_topic(s1))