premise: A man speaking to a woman with a stroller in a room with several dinners.
hypothesis: the man is black
explanation_1: The man need not be black.
explanation_2: No indication of the skin color of the man being black or dark toned. The man is speaking to someone whilst the other sentence makes no mention of it.
explanation_3: The woman with the stroller is not a man.
premise_logic: exists s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & to(x1,x3) & with(x3,x4) & in(x4,x5) & with(x5,x6) & n_dinner(x6) & a_several(s1) & Theme(s1,x6) & n_room(x5) & n_stroller(x4) & n_woman(x3) & n_speaking(x1) & of(x1,x2) & n_man(x2))
hypothesis_logic: exists s1 x1.(n_man(x1) & Theme(s1,x1) & a_black(s1))
premise_sim: exists s1 x1 x2 x3 x4 x5 x6.(with(x5,x6) & with(x3,x4) & to(x1,x3) & of(x1,x2) & n_woman(x3) & n_stroller(x4) & n_speaking(x1) & n_room(x5) & n_man(x2) & n_dinner(x6) & in(x4,x5) & a_topic(x1) & a_several(s1) & Theme(s1,x6))
hypothesis_sim: exists s1 x1.(n_man(x1) & a_black(s1) & Theme(s1,x1))