premise: A young man in a blue hoodie doing a flip off of a half-wall that is covered in graffiti.
hypothesis: A young man in a blue hoodie falls off a half-wall that is painted nicely.
explanation_1: If a young man is doing a flip off of a half-wall, he cannot fall off of it. If the half-wall is covered in graffiti, it cannot be painted nicely.
explanation_2: The wall is painted in graffiti which is not considered a nice paint.  Therefore the walls are not the same.
explanation_3: Is the boys doing a flip then he did not fall in the wall can either be covered in graffiti or nicely painted not both.
premise_logic: exists e2 e1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & in(x1,x2) & of(e1,x5) & in(e2,x7) & n_graffitus(x7) & Theme(e2,x6) & v_cover(e2) & (x5 = x6) & n_half-wall(x5) & r_off(e1) & Theme(e1,x4) & Actor(e1,x3) & v_do(e1) & n_flip(x4) & (x2 = x3) & n_hoodie(x2) & a_blue(s2) & Theme(s2,x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists e2 e1 s1 s2 s3 s4 x1 x2 x3 x4.(a_off(s4) & Manner(e2,s4) & Theme(e2,x3) & Actor(e2,x1) & v_fall(e2) & a_nicely(s3) & Manner(e1,s3) & Theme(e1,x4) & v_paint(e1) & (x3 = x4) & n_half-wall(x3) & in(x1,x2) & n_hoodie(x2) & a_blue(s2) & Theme(s2,x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))