premise: A man playing a unique violin while looking up at the ceiling.
hypothesis: The man is sitting on Santa's lap.
explanation_1: No man would play a unique violin while sitting on Santa's lap.
explanation_2: If he is playing a unique violin he is not also sitting on Santa's lap.
explanation_3: The man looking up at the ceiling cannot be on Santa's lap.
premise_logic: exists e1 e2 s1 s2 x1 x2 x3 x4.(n_ceiling(x4) & a_topic(x1) & while(e1,e2) & a_up(s2) & Manner(e2,s2) & at(e2,x4) & Actor(e2,x2) & v_look(e2) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_violin(x3) & a_unique(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
hypothesis_logic: exists e1 s1 x1 x2.(n_man(x1) & on(e1,x2) & n_lap(x2) & a_'s(s1) & Theme(s1,x2) & ne_geo_santa(x2) & Actor(e1,x1) & v_sit(e1))