A cameraman recording yet another man while he makes a speech.
The speaker is a Senator.
A man making a speech that is being recorded could be anyone, only one possibility being that he is a Senator.
exists p1 p2 p3 x1 x2 x3.(for(p1,x1) & exists x5.n_event(x5) & exists e1 x4.(Theme(e1,x4) & Actor(e1,x1) & v_make(e1) & n_speech(x4)) & n_male(x1) & while(p2,p3) & n_man(x1) & r_yet(x1) & of(x1,x3) & n_recording(x3) & of(x1,x2) & n_cameraman(x2))
exists p1 x1.(n_speaker(x1) & exists x2.((x1 = x2) & ne_nam_senator(x2)))