premise: A man in a large crowd converses with his friends.
hypothesis: A man is standing alone in the auditorium.
explanation_1: there is either a large crowd or someone is standing alone, these cannot take place at the same location.
explanation_2: A man cannot be standing alone if he is conversing with friends.
explanation_3: If he is in a large crowd, that means that he is not standing alone.
premise_logic: exists s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & with(x2,x4) & n_friend(x4) & of(x4,x1) & n_male(x1) & n_converse(x2) & of(x2,x3) & n_crowd(x3) & a_large(s1) & Theme(s1,x2) & n_man(x1))
hypothesis_logic: exists e1 s1 x1 x2.(n_auditorium(x2) & in(e1,x2) & a_alone(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & n_man(x1))