Question: Which year did Alvin Cheng organize the rally with his schoolmates in support of the hong kong umbrella movement?

Context articles: Umbrella Ultra Marathon
Art of the Umbrella Movement
Shiu-Yuen Cheng
Alvin Cheng
Why Me? (1985 film)
Umbrella Movement
2014 Hong Kong protests
Umbrella Square
Lennon Wall (Hong Kong)
Sport in Hong Kong

The Umbrella Ultra Marathon, or Umbrellaultra, was a 102 km distance running event held on 29 October 2014.
 It was not a competitive race, but a running event to support the Umbrella Movement of Hong Kong.
 The course covered New Territories, Kowloon and Hong Kong Island, which shows an umbrella shape on the map.
 Thus the trail is also known as the Umbrella Trail.
Art of the Umbrella movement refers to artistic works created as part of the Umbrella movement in Hong Kong which demanded democracy in the election of the territory's top leader.
 Most of the physical works of art are located within the three main protest sites of Admiralty, Causeway Bay and Mong Kok, some concepts have originated from outside Hong Kong.
Shiu-Yuen Cheng (鄭紹遠) is a Hong Kong mathematician.
 He is currently the Chair Professor of Mathematics at the Hong Kong University of Science and Technology.
 Cheng received his Ph.D., under the supervision of Shiing-Shen Chern, from University of California at Berkeley.
 Cheng then spent some years as a post-doctoral fellow and assistant professor at Princeton University and the State University of New York at Stony Brook.
 Then he became a full professor at University of California at Los Angeles.
 Cheng chaired the Mathematics departments of both the Chinese University of Hong Kong and the Hong Kong University of Science and Technology in the 1990s.
 In 2004, he became the Dean of Science at HKUST.
 In 2012, he became a fellow of the American Mathematical Society.
Alvin Cheng Kam-mun (, born 23 June 1988), also known as "4 Eyes Brother" (), is a Hong Kong student activist, active since 2014.
 He was a former student at Queensland University of Technology in Australia, and organised a rally with his schoolmates and Nardo Wai in support of the Hong Kong Umbrella Movement during the 2014 G20 Brisbane summit.
 His political opinions include the use of violence to fight against the police force.
 He is well known for participating in the Hong Kong Umbrella Movement, and establishing the student activism organization Student Front.
Why Me?
 (何必有我) is a 1985 Hong Kong drama film written, directed by and starring Kent Cheng.
 The film co-stars Chow Yun-fat and Olivia Cheng.
 For his performance in the film, Kent Cheng won his first Hong Kong Film Award for Best Actor at the 5th Hong Kong Film Awards.
The Umbrella Movement () is a political movement that emerged during the Hong Kong democracy protests of 2014.
 Its name arose from the use of umbrellas as a tool for passive resistance to the Hong Kong Police during the occupation which was sparked by the decision of the Standing Committee of the National People's Congress (NPCSC) of 31 August of that year which prescribed a selective pre-screening of candidates for election of the region's leader.
A series of sit-in street protests, often called the Umbrella Revolution () and sometimes used interchangeably with Umbrella Movement (), occurred in Hong Kong from 26 September to 15 December 2014.
 The protests began after the Standing Committee of the National People's Congress (NPCSC) issued a decision regarding proposed reforms to the Hong Kong electoral system.
 The decision was widely seen to be highly restrictive, and tantamount to the Chinese Communist Party's pre-screening of the candidates for the leader of Hong Kong.
Umbrella Square (), also called Umbrella Plaza, describes a large roadway in Admiralty, Hong Kong occupied by protesters during the Umbrella Movement protests in September 2014.
 On 11 December 2014, after 74 days of occupation, the area was cleared by the police and reopened to motorised traffic.
Lennon Wall refers to the artistic form of expressions in the protest.
 Lennon Wall Hong Kong literally refers to the democratic mosaic wall created during the Umbrella Movement, located at Central Government Complex, Harcourt Road, Admiralty, which is one of the main landmarks in the occupation area of Admiralty and one of the major arts of the Umbrella Movement as collective artistic works demanding democracy in the election of the territory’s top leader.
Sports in Hong Kong are a significant part of its culture.
 Due to British influence going as far back as the late 19th century, Hong Kong had an earlier introduction to Western athletics compared to other Asia regions.
 Horse racing has most spectators, while football, basketball, swimming, badminton, table tennis, cycling and running have the most participants.
 Golf is an increasingly popular sport, despite the relatively few number of courses in the city.
 In 2009, Hong Kong successfully organised the V East Asian Games and it was the biggest sporting event ever held in the territory.
 Other major international sporting events including the Equestrian at the 2008 Summer Olympics, the Hong Kong Open Golf Championship, the Hong Kong Sevens, Hong Kong Marathon, AFC Asian Cup, EAFF East Asian Cup, Hong Kong Badminton Open, Hong Kong Tennis Classic, Premier League Asia Trophy, and Lunar New Year Cup.
 Hong Kong athletes have improved in worldwide rankings.
 As of 2010, there are 32 Hong Kong athletes from seven sports ranking in world's Top 20, 29 athletes in six sports in Asia top 10 ranking.
 Moreover, Hong Kong is equally impressive performance of athletes with disabilities in 2009, having won four world championships and two Asian Champions.