A presenter in a black shirt is pointing at a slide in a conference.
The presenter is in the audience at a conference.
If someone is presenting at a conference they wouldn't be in the audience.
exists e1 s1 x1 x2 x3 x4.(at(e1,x3) & in(x3,x4) & n_conference(x4) & n_slide(x3) & Actor(e1,x1) & v_point(e1) & in(x1,x2) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_presenter(x1))
exists p1 x1 x2.(n_audience(x2) & n_presenter(x1) & exists x3.(in(x1,x2) & at(x2,x3) & n_conference(x3)))