Input: Relationship: 'be hold in', Argument/Subject 1: 'conference', Argument/Subject 2: 'september'

Answer: The Organising Committee of the IASA 2009 Annual Conference invites presentation proposals for the 40th IASA Annual Conference , to be held September 20-25 , 2009 , in Athens , Greece , hosted by the Hellenic National Audiovisual Archive .