A speaker is giving a speech at a formal event.
The speech is for a formal event.
We have no idea if the speech if for a formal event, it could be for anything.
exists e1 s1 x1 x2 x3.(at(e1,x3) & n_event(x3) & a_formal(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_give(e1) & n_speech(x2) & n_speaker(x1))
exists p1 x1.(n_speech(x1) & exists s1 x2.(for(x1,x2) & n_event(x2) & a_formal(s1) & Theme(s1,x2)))