premise: a skateboarder is performing stunt on a graffiti covered skateboard ramp.
hypothesis: A skateboard is performing in front of his friends.
explanation_1: A skateboarder can perform in front of any group even if they are not his friends.
explanation_2: A skateboard ramp stunt does not mean there is an audience of friends.
explanation_3: A skateboarder performing stunts might not be doing it for their friends, and they might be her friends instead of his friends.
premise_logic: exists e1 e2 x1 x2 x3 x4 x5.(on(e1,x3) & n_ramp(x3) & of(x3,x5) & n_skateboard(x5) & Theme(e2,x3) & v_cover(e2) & of(x3,x4) & n_graffitus(x4) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_stunt(x2) & n_skateboarder(x1))
hypothesis_logic: exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_friend(x3) & of(x3,x1) & n_male(x1) & n_front(x2) & Actor(e1,x1) & v_perform(e1) & n_skateboard(x1))