Question: Who hosted the ceremony, honoring the best in film for 2007, that was broadcast from venues that  are owned and operated by the Melbourne Convention and Exhibition Trust?

Context paragraphs:
2007 Australian Film Institute Awards: The 49th Australian Film Institute Awards ceremony, honoring the best in film for 2007, was broadcast from the Melbourne Convention and Exhibition Centre in Melbourne, Australia on the Nine Network.  Geoffrey Rush hosted the show, for the second time.  He previously presided over the 48th Australian Film Institute Awards the previous year.

57th World Science Fiction Convention: Aussiecon Three was the 57th World Science Fiction Convention, held in Melbourne, Australia on 2–6 September 1999.  The convention was held in the Melbourne Convention and Exhibition Centre.

68th World Science Fiction Convention: The 68th World Science Fiction Convention (Worldcon), Aussiecon Four, was held 2–6 September 2010, in the Melbourne Convention and Exhibition Centre in Melbourne, Victoria, Australia, the location selected by the members of Denvention 3.

XX International AIDS Conference, 2014: The XX International AIDS Conference was held in Melbourne, Australia from 20 to 25 July 2014 at the Melbourne Convention and Exhibition Centre.  It was organized by the International AIDS Society (IAS).  Over 14,000 scientists, campaigners and politicians were expected to attend.

Star Awards 20: Star Awards 20 (also SA20, Chinese: 红星大奖 20) was a double television award ceremony which was held in Singapore.  It is part of the annual Star Awards organised by MediaCorp for the two free-to-air channels, MediaCorp Channels 8 and U.  SA20 was broadcast live on Channel 8, on 20 April 2014 and 27 April 2014.  The first ceremony was held at the MediaCorp TV Theatre while the second ceremony was held at Suntec Singapore International Convention and Exhibition Centre.  The ceremonies will also be broadcast on 8 International and the second ceremony on Toggle, Astro AEC (SD) and Astro Quan Jia HD (HD).

Melbourne Convention and Exhibition Centre: The Melbourne Convention and Exhibition Centre is the name given to two adjacent buildings next to the Yarra River in South Wharf, an inner-city suburb of Melbourne, Victoria, Australia.  The venues are owned and operated by the Melbourne Convention and Exhibition Trust.

Baltimore Convention Center: The Baltimore Convention Center is a convention and exhibition hall located in downtown Baltimore, Maryland.  The Center is a municipal building owned and operated by the City of Baltimore.  The facility was constructed in two separate phases: the original Center, with 425,000 sqft of exhibition and meeting space, opened in August 1979 at a cost of $51.4 million.  A $151 million expansion, which increased the Center's total size to 1225000 sqft , was completed in April 1997.  The 752-room, city-owned Hilton Baltimore hotel opened in August 2008, connected to the convention center by an enclosed skywalk bridge.  Another expansion to the Baltimore Convention Center has been proposed at an estimated cost of $400 million that includes a new 500 room hotel and an 18,500 seat arena; this project is estimated to cost $900 million, this proposal is no longer active and considered dead.  As of March 2016, the State of Maryland is going to explore expanding the Baltimore Convention Center for an estimated cost of $600 million and build a new hotel attached to the expansion.  As of August 2016, the proposal of having a combined expanded convention center, arena and hotel has been revived.  Mayor Stephanie Rawlings-Blake requested a $1 million feasibility study from the Maryland Stadium Authority which was approved on August 2, 2016.

APRA Music Awards of 2013: The Australasian Performing Right Association Awards of 2013 (generally known as APRA Awards) are a series of related awards which include the APRA Music Awards, Art Music Awards, and Screen Music Awards.  The APRA Music Awards of 2013 was the 31st annual ceremony by the Australasian Performing Right Association (APRA) and the Australasian Mechanical Copyright Owners Society (AMCOS) to award outstanding achievements in contemporary songwriting, composing and publishing.  The ceremony was held on 17 June 2013 at the Melbourne Convention and Exhibition Centre.

Madman Anime Festival: Madman Anime Festival (also known simply as MadFest) is an annual Australian anime and Japanese culture convention held in Melbourne, Perth and Brisbane.  The convention is organised by Madman Entertainment.  The convention was inaugurated in 2016 and held in Melbourne Convention and Exhibition Centre as a two-day event from the 3rd-4 September 2016 in Melbourne.  The convention was later expanded to Perth and Brisbane after a successful inaugural event, with each event held a few months apart.

Badminton at the 2006 Commonwealth Games: The badminton competition at the 2006 Commonwealth Games took place at the purpose-built temporary venue within the Melbourne Convention and Exhibition Centre in Melbourne, Australia from 15 March until 26 March 2006.

Supporting paragraphs: 2007 Australian Film Institute Awards Melbourne Convention and Exhibition Centre
Answer: Geoffrey Rush