premise: A young man does tricks on his skateboard.
hypothesis: Two girls sit quietly and sharpen knives for the sad work ahead.
explanation_1: A young man is not two girls
explanation_2: Either a young man is doing tricks or two girls sit quietly.
explanation_3: The girls doing work and watching man.
premise_logic: exists e1 s1 x1 x2 x3.(on(e1,x3) & n_skateboard(x3) & of(x3,x1) & n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_trick(x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists e2 e1 s1 s2 x1 x2 x3 x4.(n_work(x4) & a_sad(s2) & Theme(s2,x4) & Theme(e2,x3) & Actor(e2,x2) & v_sharpen(e2) & for(x3,x4) & r_ahead(x4) & n_knife(x3) & n_girl(x2) & card_eq_2(x2) & a_quietly(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_girl(x1) & card_eq_2(x1))