A man stands in front of a slide show and gives a presentation.
A consultant stands in front of a slide show and gives a presentation.
A man giving a presentation does not mean he is a consultant., anybody can do that.
exists e1 e2 x1 x2 x3 x4 x5 x6.(Theme(e2,x6) & Actor(e2,x5) & v_give(e2) & n_presentation(x6) & n_man(x5) & in(e1,x2) & of(x2,x3) & n_show(x3) & of(x3,x4) & n_slide(x4) & n_front(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 e2 x1 x2 x3 x4 x5 x6.(Theme(e2,x6) & Actor(e2,x5) & v_give(e2) & n_presentation(x6) & n_consultant(x5) & in(e1,x2) & of(x2,x3) & n_show(x3) & of(x3,x4) & n_slide(x4) & n_front(x2) & Actor(e1,x1) & v_stand(e1) & n_consultant(x1))