premise: Three girls fell on top of one another and are laughing histerically.
hypothesis: Three girls falling and laughing.
explanation_1: The girls are falling and laughing because they fall and are laughing histerically (hysterically).
explanation_2: Three girls are falling and laughing which implies they are playing and are not getting hurt.
explanation_3: The girls were falling and laughing.
premise_logic: exists e1 e2 s1 s2 x1 x2 x3 x4.(a_histerically(s2) & Manner(e2,s2) & Actor(e2,x4) & v_laugh(e2) & n_girl(x4) & card_eq_3(x4) & on(e1,x2) & of(x2,x3) & n_thing(x3) & card_eq_1(x3) & a_another(s1) & Theme(s1,x3) & n_top(x2) & Actor(e1,x1) & v_fall(e1) & n_girl(x1) & card_eq_3(x1))
hypothesis_logic: exists e1 e2 x1 x2.(Actor(e2,x2) & v_laugh(e2) & n_girl(x2) & card_eq_3(x2) & Actor(e1,x1) & v_fall(e1) & n_girl(x1) & card_eq_3(x1))