premise: Man with beard doing skateboarding stunt
hypothesis: A man with a goatee does a backflip on a skateboard.
explanation_1: There are lots of tricks that can be done on a skateboard, not just a backflip.  Also, the man could have a full beard and not just a goatee.
explanation_2: Not every beard is goatee, and every stunt includes backflip
explanation_3: Because the man has a beard, he cannot have a goatee.  Not all skateboarding stunts are a backflip.
premise_logic: exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & with(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_do(e1) & n_stunt(x4) & of(x4,x5) & n_skateboarding(x5) & (x2 = x3) & n_beard(x2) & n_man(x1))
hypothesis_logic: exists e1 x1 x2 x3 x4.(on(e1,x4) & n_skateboard(x4) & Theme(e1,x3) & Actor(e1,x1) & v_do(e1) & n_backflip(x3) & with(x1,x2) & n_goatee(x2) & n_man(x1))
premise_sim: exists e1 x1 x2 x3 x4 x5.(with(x1,x2) & v_do(e1) & of(x4,x5) & n_stunt(x4) & n_skateboarding(x5) & n_man(x1) & n_beard(x2) & a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & (x2 = x3))
hypothesis_sim: exists e1 x1 x2 x3 x4.(with(x1,x2) & v_do(e1) & on(e1,x4) & n_skateboard(x4) & n_man(x1) & n_goatee(x2) & n_backflip(x3) & Theme(e1,x3) & Actor(e1,x1))