premise: A man uses a projector to give a presentation.
hypothesis: A man is giving a presentation in front of a large crowd.
explanation_1: The use of a projector does not imply there is a large crowd.
explanation_2: Just because a man uses a projector to give a presentation does not mean he is in front of a large crowd.
explanation_3: Not every crowd is a large crowd.
premise_logic: exists e1 p1 x1 x2.(Theme(e1,p1) & Recipient(e1,x2) & Actor(e1,x1) & v_use(e1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x1) & v_give(e2) & n_presentation(x3)) & n_projector(x2) & n_man(x1))
hypothesis_logic: exists e1 s1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_give(e1) & in(x2,x3) & of(x3,x4) & n_crowd(x4) & a_large(s1) & Theme(s1,x4) & n_front(x3) & n_presentation(x2) & n_man(x1))