premise: a man doing tricks on a motorcycle
hypothesis: Evil Kneavel shows off for the crowd.
explanation_1: You can not infer the man is Evil Kneavel.
explanation_2: Just because a man doing tricks on a motorcycle doesn't mean the man is Evil Kneavel.
explanation_3: There may or may not be a crowd present when man does tricks on a motorcycle and not all men are Evil Kneavel therefore the man doing tricks may be someone else and he may not have any witnesses.
premise_logic: exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_motorcycle(x4) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & n_trick(x3) & (x1 = x2) & n_man(x1))
hypothesis_logic: exists e1 s1 x1 x2 x3.(n_crowd(x3) & ne_nam_kneavel(x1) & (x1 = x2) & ne_nam_evil(x2) & a_off(s1) & Manner(e1,s1) & for(e1,x3) & Actor(e1,x1) & v_show(e1))
premise_sim: exists e1 x1 x2 x3 x4.(v_do(e1) & on(e1,x4) & n_trick(x3) & n_motorcycle(x4) & n_man(x1) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists e1 s1 x1 x2 x3.(v_show(e1) & ne_nam_kneavel(x1) & ne_nam_evil(x2) & n_crowd(x3) & for(e1,x3) & a_off(s1) & Manner(e1,s1) & Actor(e1,x1) & (x1 = x2))