Question: When does it start to snow in the largest metropolitan area as measured by population of the country holding the exhibit of the Commission on modernization and technological development?

full_context: Document 1: St. Petersburg, Florida: St. Petersburg is the second - largest city in the Tampa Bay Area, after Tampa. Together with Clearwater, these cities comprise the Tampa -- St. Petersburg -- Clearwater Metropolitan Statistical Area, the second - largest in Florida with a population of around 2.8 million. St. Petersburg is located on a peninsula between Tampa Bay and the Gulf of Mexico, and is connected to mainland Florida to the north.
Document 2: 3D television: Stereoscopic 3D television was demonstrated for the first time on 10 August 1928, by John Logie Baird in his company's premises at 133 Long Acre, London. Baird pioneered a variety of 3D television systems using electro - mechanical and cathode - ray tube techniques. The first 3D TV was produced in 1935, and stereoscopic 3D still cameras for personal use had already become fairly common by the Second World War. Many 3D movies were produced for theatrical release in the US during the 1950s just when television started to become popular. The first such movie was Bwana Devil from United Artists that could be seen all across the US in 1952. One year later, in 1953, came the 3D movie House of Wax which also featured stereophonic sound. Alfred Hitchcock produced his film Dial M for Murder in 3D, but for the purpose of maximizing profits the movie was released in 2D because not all cinemas were able to display 3D films. In 1946 the Soviet Union also developed 3D films, with Robinzon Kruzo being its first full - length 3D movie. People were excited to view the 3D movies, but were put off by their poor quality. Because of this, their popularity declined quickly. There was another attempt in the 1970s and 80s to make 3D movies more mainstream with the releases of Friday the 13th Part III (1982) and Jaws 3 - D (1983). 3D showings became more popular throughout the 2000s, culminating in the success of 3D presentations of Avatar in December 2009 and January 2010.
Document 3: Paris: Spring and autumn have, on average, mild days and fresh nights but are changing and unstable. Surprisingly warm or cool weather occurs frequently in both seasons. In winter, sunshine is scarce; days are cold but generally above freezing with temperatures around 7 °C (45 °F). Light night frosts are however quite common, but the temperature will dip below −5 °C (23 °F) for only a few days a year. Snow falls every year, but rarely stays on the ground. The city sometimes sees light snow or flurries with or without accumulation.
Document 4: Climate of Moscow: Snow cover (averaging 3 -- 5 months per year) is formed at the beginning of November and melts in beginning of April, but in recent years snow cover has lasted shorter than usual. For example, in the winter of 2006 -- 2007 the snow cover did n't form until the end of January, and melted at the beginning of March; in 2007 -- 2008, the snow cover melted at the end of February, and in the 2008 -- 2009 winter, snow cover did n't form until the end of December, which is one month later than usual. Yet in 2011 - 2012 it melted in the middle of April.
Document 5: Boston: Boston's coastal location on the North Atlantic moderates its temperature, but makes the city very prone to Nor'easter weather systems that can produce much snow and rain. The city averages 43.8 inches (1,110 mm) of precipitation a year, with 43.8 inches (111 cm) of snowfall per season. Snowfall increases dramatically as one goes inland away from the city (especially north and west of the city)—away from the moderating influence of the ocean. Most snowfall occurs from December through March, as most years see no measurable snow in April and November, and snow is rare in May and October. There is also high year-to-year variability in snowfall; for instance, the winter of 2011–12 saw only 9.3 in (23.6 cm) of accumulating snow, but the previous winter, the corresponding figure was 81.0 in (2.06 m).[d]
Document 6: General Satellite: May, 19th, 2010London, Great Britain. World premiere of 3 DV channel. GS Group and Valery Gergiev presented joint 3D-project at the press-conference in Barbican-centre, London. General Satellite Corporation announced the launch of its own European 3D TV channel 3DV which will be filled with different content, including the one dedicated to culture and travelling. Considerable part of channel’s programs will be the Mariinsky Theatre programs. Fragments from the Mariinsky Theatre Gala Concert and Giselle ballet staged at the Mariinsky Theatre were presented in 3D during presentation before press-conference.
Document 7: General Satellite: February, 2nd, 2010 – GS Group announced launching of the first 3D-broadcasting in Russia and Eastern Europe. On April 15, for the first time in Russia the live 3D broadcast was performed by the company (Gala concert in the Mariinsky Theatre). European premiere of the satellite channel with three-dimensional image 3DV was held on May 21 in London.
Document 8: St. Petersburg, Florida: St. Petersburg is a city in Pinellas County, Florida, United States. As of the 2015 census estimate, the population was 257,083, making it the fifth-most populous city in Florida and the largest in the state that is not a county seat (the city of Clearwater is the seat of Pinellas County).
Document 9: General Satellite: June 17–19, 2010During Petersburg Economic Forum, President of the Russian Federation D.A. Medvedev visited the exhibit of the Commission on modernization and technological development of the economy of Russia, where he watched the demonstration of Corporation’s developments in the field of 3D TV, namely, the first Russian 3D channel – 3DV.
Document 10: European Russia: European Russia is the western part of Russia that is a part of Eastern Europe. With a population of 110 million people, European Russia has about 77% of Russia's population, but covers less than 25% of Russia's territory. European Russia includes Moscow and Saint Petersburg, the two largest cities in Russia.
Document 11: Moscow: Moscow (/ ˈmɒskoʊ / or / ˈmɒskaʊ /; Russian: Москва́, tr. Moskva, IPA: (mɐˈskva) (listen)) is the capital and most populous city of Russia, with 12.2 million residents within the city limits and 17.1 million within the urban area. Moscow has the status of a Russian federal city.
Document 12: Saint Petersburg: Saint Petersburg (Russian: Санкт - Петербу́рг, tr. Sankt - Peterburg, IPA: (ˈsankt pjɪtjɪrˈburk) (listen)) is Russia's second - largest city after Moscow, with 5 million inhabitants in 2012, part of the Saint Petersburg agglomeration with a population of 6.2 million (2015). An important Russian port on the Baltic Sea, it has a status of a federal subject (a federal city).
Document 13: Richmond, Virginia: Precipitation is rather uniformly distributed throughout the year. However, dry periods lasting several weeks do occur, especially in autumn when long periods of pleasant, mild weather are most common. There is considerable variability in total monthly amounts from year to year so that no one month can be depended upon to be normal. Snow has been recorded during seven of the twelve months. Falls of 3 inches (7.6 cm) or more within 24 hours occur an average once per year. Annual snowfall, however, is usually light, averaging 10.5 inches (27 cm) per season. Snow typically remains on the ground only one or two days at a time, but remained for 16 days in 2010 (January 30 to February 14). Ice storms (freezing rain or glaze) are not uncommon, but they are seldom severe enough to do any considerable damage.
Document 14: High-definition television: In 1958, the Soviet Union developed Тransformator (Russian: Трансформатор, meaning Transformer), the first high-resolution (definition) television system capable of producing an image composed of 1,125 lines of resolution aimed at providing teleconferencing for military command. It was a research project and the system was never deployed by either the military or consumer broadcasting.
Document 15: Detroit: Precipitation is moderate and somewhat evenly distributed throughout the year, although the warmer months such as May and June average more, averaging 33.5 inches (850 mm) annually, but historically ranging from 20.49 in (520 mm) in 1963 to 47.70 in (1,212 mm) in 2011. Snowfall, which typically falls in measurable amounts between November 15 through April 4 (occasionally in October and very rarely in May), averages 42.5 inches (108 cm) per season, although historically ranging from 11.5 in (29 cm) in 1881−82 to 94.9 in (241 cm) in 2013−14. A thick snowpack is not often seen, with an average of only 27.5 days with 3 in (7.6 cm) or more of snow cover. Thunderstorms are frequent in the Detroit area. These usually occur during spring and summer.
ground_truth: the beginning of November
sub_queries: where was the exhibit held? Answer: Russia
what city is Russia ’s largest metropolitan area as measured by population Answer: Moscow
when does it start to snow in Moscow Answer: the beginning of November