A woman in a black shirt giving a speech.
A woman is giving a speech on diversity.
Speech subjects can include a range of topics, not just diversity.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_give(e1) & n_speech(x4) & (x1 = x3) & in(x1,x2) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_woman(x1))
exists e1 x1 x2 x3.(on(e1,x3) & n_diversity(x3) & Theme(e1,x2) & Actor(e1,x1) & v_give(e1) & n_speech(x2) & n_woman(x1))