Question: Nic Nolan worked at which radio station that is 50% owned by NOVA Entertainment?

Context paragraphs:
Nova 93.7: Nova 93.7 (call sign: 6PER) is a commercial radio station in Perth, Western Australia.  Owned by NOVA Entertainment, it was established in the Perth market on 5 December 2002.  Nova 93.7 was launched at 3pm by the Red Hot Chili Peppers and by current drive presenter Tim Blackwell, with "Can't Stop" the first song being aired.

Nova 91.9: Nova 91.9 (call sign: 5ADL) is a commercial radio station operating in Adelaide, Australia, owned by NOVA Entertainment.

Koffee: Koffee is a Digital Radio station broadcast by NOVA Entertainment in Sydney, Melbourne, Adelaide and Brisbane.  It was launched on 16 April 2009 prior to the commencement of DAB+ broadcasts.

5AA: 5AA (identified as FIVEaa), is 50% owned by NOVA Entertainment and Lachlan Murdoch's company Illyra, and is Adelaide's only commercial talkback radio station.  The station has a range of programs including news, sports, current affairs, social issues, football calls, gardening, lifestyle, cars, travel and health.

Star 104.5: Star 104.5 (ACMA call sign: 2GOS) is a commercial radio station based in Gosford, Australia.  It is owned by NOVA Entertainment.  Star 104.5 is licensed to broadcast to a coverage area stretching from Brooklyn in the south, to Morisset in the north, however fortuitous coverage into most areas of Sydney and Newcastle is also possible due to the close proximity of both markets.  Star 104.5's studios are located in Erina, while the stations transmitter facility is located in Somersby.

Nova (radio network): The Nova Network is a group of five Australian radio stations owned wholly or in part by NOVA Entertainment.  The Perth station is a joint venture between NOVA Entertainment and the Australian Radio Network.

Nic Nolan: Nic Nolan (born 1 May 1958 in Chiswick, London, England) is an Australian broadcast journalist and communications consultant working with both private enterprise and State and Local Government in Australia.  Nolan was General Manager of Adelaide youth radio station Fresh 92.7 (Fresh FM (Australia)) 2009–2011.  Before that, Nolan was Programme Director of Adelaide's number one Newstalk radio station 5AA (FIVEaa) 2004–2008, in that time, taking the station to 32 consecutive breakfast number ones and 11 consecutive 10+ number one ratings victories.  Between 1988 and 2004, Nolan was the breakfast news anchor and News Director of Perth's number one rating radio station, MIX 94.5.  Nolan was a finalist for Best Programme Director in the Australian Commercial Radio Awards, in 2005 and in 2007 and 2008.  In February 2009, Nolan was commissioned to project-manage the establishment of an online daily newspaper in Adelaide, "Indaily".  Nolan is Vice-President of the South Australian Press Club of which he has been a committee-member since 2004.

KYTC (FM): KYTC (102.7 FM, "Super Hits 102.7") is a radio station that broadcasts a classic hits music format.  Licensed to Northwood, Iowa, U.S., it serves northern Iowa and southern Minnesota.  The station is currently owned by Alpha Media, through licensee Digity 3E License, LLC.  The station was originally operated by Northwood businessman, Marlin Hanson as an oldies radio station with an effective radiated power of 3,000 watts, then 6,000 watts.  Hanson built the station because he bought the tower from the local cable company after they abandoned it and decided a radio station would be a good use for the empty tower.  It was sold to Dave Nolander who also owned KATE radio in Albert Lea, MN.  It was operated as an oldies station featuring music of the 50's and 60's from a studio located in Northwood and satellite programming during the evening hours.  The station was sold to Three Eagles Communications and the power increased to 25,000 watts.  Between 2002 and 2012.  the station changed from Oldies to Country to active rock and finally back to a hits of the 60's through the 80's.  The station transmitter is located 3 miles north of Northwood and the studio is located in Mason City.  Current owner Digity, LLC purchased the station in September 12, 2014.

CKBW-FM: CKBW-FM is a Canadian radio station broadcasting at 98.1 FM in Bridgewater, Nova Scotia.  The station also operates in Liverpool, Nova Scotia at 94.5 FM and in Shelburne, Nova Scotia at 93.1 FM.  The station plays an adult contemporary format branded as "CKBW Radio" with the current slogan "The Sound Of The South Shore".  CKBW is owned & operated by Acadia Broadcasting which also owns sister station CJHK-FM.

97.3 FM (Brisbane): 97.3fm (call sign: 4BFM) is a commercial radio station in Brisbane, Australia.  It is a 50/50 joint venture between NOVA Entertainment and Australian Radio Network, who jointly purchased the license at auction for $67M.

Supporting paragraphs: Nic Nolan 5AA
Answer: 5AA