premise: Girls are playing volleyball.
hypothesis: Boys are playing volleyball.
explanation_1: Only the boys or the girls can play volleyball, unless the two groups are either playing independently of one another or are playing together without separating by gender.
premise_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_volleyball(x2) & n_girl(x1))
hypothesis_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_volleyball(x2) & n_boy(x1))
premise_sim: exists e1 x1 x2.(v_play(e1) & n_volleyball(x2) & n_girl(x1) & Theme(e1,x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_play(e1) & n_volleyball(x2) & n_boy(x1) & Theme(e1,x2) & Actor(e1,x1))