A man is giving a speech standing at a podium.
A politician is giving a speech.
The man giving a speech may not be a politician.
exists e1 x1 x2 x3 x4.(Recipient(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_give(e1) & n_speech(x4) & at(x2,x3) & n_podium(x3) & n_standing(x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_give(e1) & n_speech(x2) & n_politician(x1))