premise: A man and woman in front of a grill.
hypothesis: There is no man
explanation_1: a man   is not the same as no man
premise_logic: exists s1 x1 x2 x3 x4.(a_topic(s1) & in(s1,x3) & of(x3,x4) & n_grill(x4) & n_front(x3) & n_woman(x2) & n_man(x1) & subset_of(x2,s1) & subset_of(x1,s1))
hypothesis_logic: exists p1 x1.-exists x2.((x1 = x2) & n_man(x2))
premise_sim: exists s1 x1 x2 x3 x4.(subset_of(x2,s1) & subset_of(x1,s1) & of(x3,x4) & n_woman(x2) & n_man(x1) & n_grill(x4) & n_front(x3) & in(s1,x3) & a_topic(s1))
hypothesis_sim: exists x1.all x2.(-n_man(x2) | -(x1 = x2))