Question: Who presents "The Bob Rogers Show", Monday to Friday between 9 am and 1 pm, and the six-hour Saturday evening "Reminiscing" program on a Sydney radio station that broadcasts an oldies format, and is aimed at an older age demographic ?

full_context: Document 1: 2GZ: 2GZ (call sign: 2OAG) is an Australian radio station, licensed to Orange, New South Wales. It is owned and operated by Macquarie Regional RadioWorks, and transmits on 105.1 MHz on the FM band. It originally broadcast on 990 kHz, before switching to 1089 kHz, before switching to the FM band. The former Am frequency of 1089 was turned into a relay station of an automated Sydney station, and later purchased by Broadcast Operations Group.
Document 2: Bob Edwards: Robert Alan "Bob" Edwards (born May 16, 1947) is an American broadcast journalist, a Peabody Award-winning member of the National Radio Hall of Fame. He gained reputation as the first host of National Public Radio's flagship program, "Morning Edition". Starting in 2004, Edwards then was the host of "The Bob Edwards Show" on Sirius XM Radio and "Bob Edwards Weekend" distributed by Public Radio International to more than 150 public radio stations. Those programs ended in September 2015.
Document 3: Austereo Radio Network: Austereo Radio Network formerly operated commercial radio networks in metropolitan and regional areas of Australia. On 6 April 2011, Southern Cross Media purchased a majority of the company and is in the process of unifying the Austereo networks with Southern Cross's regional brands. In July 2011, Southern Cross Media and Austereo were merged to form Southern Cross Austereo.
Document 4: Sea FM: Sea FM is a commercial Australian radio network, consisting of stations in Queensland and New South Wales and is owned by Southern Cross Austereo. Some Sea FM stations were later sold to meet media ownership requirements. Prime Television Limited purchased Sea FM Townsville in Queensland and Grant Broadcasters purchased Sea FM stations in Devonport and Burnie in Tasmania. All Sea FM stations currently owned by Southern Cross Austereo except Cairns, Mackay and Rockhampton / Gladstone, are now considered part of the Today's Hit Network after Southern Cross Media merged with Austereo.
Document 5: Bob Harris (radio): Robert Brinley Joseph Harris, OBE (born 11 April 1946), known as "'Whispering Bob Harris", is an English music presenter known for being a host of the BBC2 music programme "The Old Grey Whistle Test", and as a co-founder of the listings magazine "Time Out".
Document 6: ABC Radio Sydney: ABC Radio Sydney (official call sign: 2BL) is an ABC radio station in Sydney, Australia. It is the flagship station in the ABC Local Radio network and broadcasts on 702 kHz on the AM dial. The station transmits with a power (CMF) of 3,110V, which is equivalent to 50 kW (the maximum permissible in Australia) from a site 30 kilometres west of the Sydney CBD.
Document 7: Talking Lifestyle 882: Talking Lifestyle (ACMA callsign: 4BH) is a radio station in Brisbane, the state capital of Queensland, Australia. Its analog broadcast frequency is 882 KHz AM, simulcasted on digital radio channel 9B, and markets itself for the baby boomer market. It is owned by Macquarie Media.
Document 8: 2CH: 2CH is a commercial radio station in Sydney, Australia, at 1170 kHz AM. It broadcasts an oldies format, and is aimed at an older age demographic. In January 2017 2CH was sold to a consortium of Oceania Capital Partners, Glenn Wheatley and John Williams.
Document 9: Bob Dyer: Robert Neal Dyer OBE (22 May 19099 January 1984), who took the stage name of Bob Dyer, was a Gold Logie-award-winning American-born vaudeville entertainer and singer, radio and television personality, and radio and television quiz show host who made his name in Australia. Dyer is best known for the long-running radio and then television quiz show, "Pick a Box". At the height of his radio career, Dyer and his friend and rival, Jack Davey, were regarded as Australia's top quiz comperes.
Document 10: Richard Mercer (radio host): Richard Mercer is an Australian radio presenter. He was the host of the popular long-running program "Love Songs and Dedications" on the (sister) commercial radio stations Mix 106.5 (now KIIS 106.5) in Sydney and Mix 101.1 in Melbourne, where he was referred to as "The Love God". He now presents his new radio show "Your Song" on newly re-branded commercial station 101.7 WSFM from 7-10 pm Monday to Thursday.
Document 11: Radio personality: A radio personality (American English) or radio presenter (British English), commonly referred to as a "disc jockey" or "DJ" for short, is a person who has an on-air position in radio broadcasting. A radio personality that hosts a radio show is also known as a radio host, and in India and Pakistan as a radio jockey. Radio personalities who introduce and play individual selections of recorded music are known as disc jockeys. The term has evolved to also describe a person who mixes a continuous flow of recorded music in real time. Broadcast radio personalities may include talk radio hosts, AM/FM radio show hosts, and satellite radio program hosts. Notable radio personalities include pop music radio hosts Martin Block, Alan Freed, Dick Clark, Delilah Luke, Ameen Sayani, Wolfman Jack, and Casey Kasem, shock jocks such as Don Imus and Howard Stern, as well as sports talk hosts such as Mike Francesa and political talk hosts such as Rush Limbaugh.
Document 12: 101.7 WSFM: 101.7 WSFM (call sign: 2UUS) is a FM band radio station broadcasting in Sydney, Australia. Its main content is commercial music, in particular classic hits from the 1960s to the Early 2000s, with a greater focus on the 1970s, 1980s and 1990s. The station is owned by the Australian Radio Network, a fully owned subsidiary of APN News & Media Limited. Its target market is all people aged 39–54.
Document 13: Bob Rogers (disc jockey): Bob Rogers OAM (born 3 December 1926) is an Australian disc jockey and radio broadcaster. He presents "The Bob Rogers Show", Monday to Friday between 9 am and 1 pm, and the six-hour Saturday evening "Reminiscing" program on Sydney radio station 2CH.
Document 14: Gary Roberts (radio broadcaster): Gary Roberts is managing director of Perth radio station Nova 93.7 having started his radio career in the late 60's at 3AW in Melbourne. He spent nine years on air with a number of stations including 5AD (radio station) Adelaide, 2UW Sydney and 6KY Perth before moving into Programming. As a Programme Director, he programmed four stations to No 1 in their respective markets including a record run of 34 consecutive No 1 surveys with 96fm (Perth radio station), which he launched in 1980. He was General Manager of 96fm from 1984 to 1992 when he left to take over the same role at 94.5FM in Perth.
Document 15: WCHB: WCHB is an American AM radio station licensed to Taylor, Michigan, at 1200 kHz, and serving the Metro Detroit market. Owned previously by Radio One, WCHB has identified as NewsTalk 1200 and 99.9 FM WCHB, and aired a News/Talk format, with Motown & Classic Soul during the late evening and overnight hours. It is currently unknown what the new format will be under ownership of Crawford.
ground_truth: Bob Rogers