premise: A snowboarder leaps through the air against a dark background.
hypothesis: a man is outside snowboarding down a hill.
explanation_1: You can not infer he is going down a hill.
explanation_2: Many snowboarders now practice indoors or on outdoor courses with few hills, he may not be outside or going down a hill.
explanation_3: The man could be indoors and on a flat surface, not down a hill or outside.
premise_logic: exists e1 s1 x1 x2 x3.(n_air(x2) & through(e1,x2) & against(x2,x3) & n_background(x3) & a_dark(s1) & Theme(s1,x3) & Actor(e1,x1) & v_leap(e1) & n_snowboarder(x1))
hypothesis_logic: exists e1 s1 s2 x1 x2.(a_outside(s2) & Manner(e1,s2) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_snowboard(e1) & n_hill(x2) & n_man(x1))