premise: A man speaking at a conference.
hypothesis: The man is speaking.
explanation_1: If someone is speaking at a conference then they must actually be speaking.
premise_logic: exists x1 x2 x3.(a_topic(x1) & at(x1,x3) & n_conference(x3) & n_speaking(x1) & of(x1,x2) & n_man(x2))
hypothesis_logic: exists e1 x1.(n_man(x1) & Actor(e1,x1) & v_speak(e1))
premise_sim: exists x1 x2 x3.(of(x1,x2) & n_speaking(x1) & n_man(x2) & n_conference(x3) & at(x1,x3) & a_topic(x1))
hypothesis_sim: exists e1 x1.(v_speak(e1) & n_man(x1) & Actor(e1,x1))