premise: Four men in red vests with crosses on them ski on a mountain.
hypothesis: Four men are racing down a mountain on skis while wearing colorful red vests.
explanation_1: You can not infer they are racing.
explanation_2: The vest cannot be colorful and red at the same time.
explanation_3: There is nothing in sentence one that indicates at what pace the men are skiing down the mountain.
premise_logic: exists e1 s1 x1 x2 x3 x4.(on(e1,x4) & n_mountain(x4) & Actor(e1,x1) & v_ski(e1) & with(x1,x3) & on(x3,x1) & n_thing(x1) & n_cross(x3) & in(x1,x2) & n_vest(x2) & a_red(s1) & Theme(s1,x2) & n_man(x1) & card_eq_4(x1))
hypothesis_logic: exists e1 e2 s1 s2 s3 x1 x2 x3 x4.(while(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_wear(e2) & n_vest(x4) & a_red(s3) & Theme(s3,x4) & a_colorful(s2) & Theme(s2,x4) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_race(e1) & on(x2,x3) & n_ski(x3) & n_mountain(x2) & n_man(x1) & card_eq_4(x1))