Question: Who is in the cast of the 2017 prequel The Prelude that also was the winner of the Mr. Hong Kong pageant?

Context paragraphs:
Lee San-san: Lee San-San (, born 9 October 1977, was the winner of the 1996 Miss Hong Kong Pageant and her territory's representative at Miss Universe 1997.  Lee placed 45th at that pageant like former Miss Hong Kongs, Mok Hoi Yan and Halina Tam.  She also competed at the Miss Chinese International 1997 pageant where she finished 2nd.  She signed with TVB, and starred in various Hong Kong television dramas, before leaving the network.  She is a Hakka of Meixian ancestry.

Line Walker: The Prelude: Line Walker: The Prelude () is an upcoming 2017 drama produced by TVB.  It is the prequel to the 2014 drama Line Walker.  It stars Michael Miu, Benz Hui, Moses Chan, Jessica Hsuan, Benjamin Yuen, Chau Pak-ho, Priscilla Wong and Alice Chan.

Miss Chinese International Pageant 2012: The 23rd Miss Chinese International Pageant, Miss Chinese International Pageant 2012 was held on January 15, 2012.  Miss Chinese International 2010 Eliza Sam of Vancouver, Canada crowned her successor, Kelly Cheung of Chicago, USA at the end of the pageant.  Cheung represented Hong Kong, China at Miss World 2012, becoming the first Miss Chinese International titleholder to represent the region in a Miss World Pageant that is not a Miss Hong Kong Pageant titleholder.

Benjamin Yuen: Benjamin Yuen Wai-ho (Simplified Chinese: 袁伟豪; Traditional Chinese: 袁偉豪, born May 11, 1981) he became the winner of Hong Kong's Mr. Hong Kong beauty contest in 2007.  Benjamin is the first winner from Hong Kong as the previous two winners, Matthew Ko and Francois Huynh came from Toronto, Ontario, Canada and France respectively.

Olivia Cheng: Olivia Cheng (Chinese: 鄭文雅, Pinyin: Zheng Wenya), born 14 February 1960, is a Hong Kong based former actress.  She won the 1979 Miss Hong Kong Pageant and was also elected "Miss Photogenic."  She represented Hong Kong in Miss Universe 1979 in Perth, Western Australia, where she went unplaced but ranked a very respectable 21st place in the preliminary swimsuit competition.  Olivia created a controversy when she joined ATV (the arch-rival of TVB, the organiser of the Miss Hong Kong pageant) immediately after crowning her successor in 1980.  This incident embarrassed TVB so much that in 1981, TVB decided to sign 1.5-year contracts with all Miss Hong Kong winners so that they had to stay with TVB for at least 6 months after their reign was over.

Hoyan Mok: Hoyan Mok (莫可欣) was the winner of the 1993 Miss Hong Kong Pageant and a TVB Hong Kong actress.  She beat Kenix Kwok, who was considered a favourite to win, having won two side awards including Media's Favourite and Potential Artist.  She is Alex Fong Chung-Sun (方中信)'s wife, and has a daughter named Ka Ching.  As Miss Hong Kong, she also competed at the Miss Universe 1994 pageant.  She placed 45th at the pageant, same as her successor Halina Tam.  Mok also competed at the Miss Chinese International Pageant 1994 where she made the top 10 only, becoming the first Miss Hong Kong to not place in the top 3.

Eye in the Sky (2007 film): Eye in the Sky () is a 2007 Hong Kong crime film starring Simon Yam, Tony Leung Ka-fai and Miss Hong Kong pageant winner Kate Tsui in her film debut.  Yam and Tsui play surveillance operatives on the trail of a gang of professional robbers led by Chan Chong-Shan (Leung).  The title is derived from the casino surveillance tech "eye in the sky".  It marks the directorial debut of Yau Nai-hoi, a long-time screenwriter for films directed by Johnnie To, who co-produced the film with his production company Milkyway Image.  "Eye in the Sky" premiered as an Official Selection at the 2007 Berlin International Film Festival, and as an Opening Film at the Hong Kong International Film Festival.  It was released in Hong Kong on 21 June 2007.

Miss Hong Kong 2007: Miss Hong Kong 2007 pageant, the 35th Miss Hong Kong pageant was held in the Hong Kong Coliseum on 21 July 2007.  Sixteen delegates competed for the title.  Contestant #3: Kayi Cheung was crowned the winner by outgoing titleholder, Aimee Chan.

Miss Hong Kong 2009: The Miss Hong Kong 2009 pageant, the 37th Miss Hong Kong pageant was held in the Hong Kong Coliseum on August 22, 2009.  Ten delegates completed for the title.  The winner was Sandy Lau and she competed at Miss World 2010, but not Miss Chinese International 2010, because the pageant was postponed until after Sandy Lau crowned her successor.  The first runner-up was Germaine Li, and she represented Hong Kong in the Miss International 2010 pageant.  The second runner-up was Mizuni Hung.

Miss Hong Kong 2008: Miss Hong Kong 2008 The 36th Miss Hong Kong Pageant which was televised live internationally from the Hong Kong Convention and Exhibition Centre on 19 July 2008.  Twenty-two-year-old Edelweiss Cheung became the new Miss Hong Kong and the tallest Miss Hong Kong, in the history of the paeant.  Skye Chan the first runner-up and replaced Edelweiss during her duties due to Edelweiss not showing up.  Skye Chan represented Hong Kong in Miss World 2008, and Miss Chinese International 2009.  Second runner-up Sire Ma represented Hong Kong at Miss International 2008

Supporting paragraphs: Line Walker: The Prelude Benjamin Yuen
Answer: Benjamin Yuen