A man wearing a white cap standing a platform.
the man is delivering a speech
Just because a man is standing on a platform, it doesn't mean he is delivering a speech. He may be the body guard of the person giving the speech.
exists e1 e2 s1 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_wear(e2) & n_platform(x5) & Time(e1,x5) & Actor(e1,x4) & v_stand(e1) & (x3 = x4) & n_cap(x3) & a_white(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_deliver(e1) & n_speech(x2))