Question: Italaian billionaire and owner of the third  biggest chocolate producter and confectioner company is the widow of who?

Context articles: Maria Franca Fissolo
Olza S.A.
Leonidas (chocolate maker)
Colours of Ostrava
Queen discography
Sainte-Claire, Quebec
Ghirardelli Chocolate Company
Ferrero SpA
GEM Altigliss Challenge
World Chocolate Wonderland

Maria Franca Fissolo (born 1941) is an Italian billionaire, the widow of Michele Ferrero, and the owner of Ferrero SpA, Europe's second largest confectionery company.
Olza S.A. was a Polish confectioner company, located in Cieszyn.
 Olza, which was founded in 1920 by Marek Pipes, father of Richard Pipes and grandfather of Daniel Pipes, under the name "Dea" , created Prince Polo chocolate wafers, Poland's most popular chocolate bar.
Leonidas is a Belgian chocolate company that produces chocolate and other related products.
 The company was started in 1913 by Greek-American confectioner Leonidas Kestekides in Brussels although he first began producing his chocolate in the U.S. Even so, according to author and editor Mort Rosenblum, Leonidas chocolate is “real Belgian chocolate, fairly priced, and plenty of people like it.”
 Its maintenance has been passed down through Leonidas Kestelides’ descendants over the years.
 Leonidas has 350 shops in Belgium and nearly 1,250 stores in around 50 countries including 340 in France.
 Leonidas has become one of the highest producing, widespread chocolate companies in the world.
 In 2016, the company has been named in the Panama Papers.
Colours of Ostrava, or simply Colours, is a multi-genre festival, the biggest international music festival in the Czech Republic and one of the biggest music events in Central Europe, held every summer since 2002 in Ostrava, the third biggest city in the country.
 Colours features 16 stages including 4 big open-air stages (the main one with a capacity of 15,000), 6 indoor stages, a theatre stage, a workshop stage, a kids' stage, a cinema and live discussions.
 It features performers from all major popular music genres as well as avant-garde music and world music.
Queen are a British rock band, which consisted of vocalist Freddie Mercury (d. 1991), guitarist Brian May, bassist John Deacon, and drummer Roger Taylor.
 Founded in 1970, Queen released their self-titled debut album in 1973.
 Despite not being an immediate success, Queen gained popularity in Britain with their second self-titled album in 1974.
 Their 1975 single, "Bohemian Rhapsody", was number 1 for nine weeks (and a further five weeks in 1991) and is the third biggest selling single of all time in the UK.
 The band's 1981 "Greatest Hits" album is the biggest selling album in UK history with 6.0 million copies sold by 2014.
 The band's 1991 compilation "Greatest Hits II" is also one of the UK's top ten biggest sellers of all time, with 3.8 million copies sold by 2012.
Sainte-Claire is a village in the Bellechasse Regional County Municipality, part of the Chaudière-Appalaches administrative region of Quebec, Canada.
 It has a population of 3,243.
 It is the third biggest municipality in the RCM, after Saint-Henri and Saint-Anselme.
 The Etchemin River goes through the village.
 Prévost Car, one of the biggest manufacturers of commercial buses in North America, and founded by one of Sainte-Claire's native sons, Eugène Prévost, is located in the village, and is by far the biggest employer in the region.
The Ghirardelli Chocolate Company is a United States division of Swiss confectioner Lindt & Sprüngli.
 The company was founded by and is named after Italian chocolatier Domenico Ghirardelli, who, after working in South America, moved to California.
 The Ghirardelli Chocolate Company was incorporated in 1852, and is the third-oldest chocolate company in the United States, after Baker's Chocolate and Whitman's.
Ferrero SpA (] ) is an Italian manufacturer of branded chocolate and confectionery products and it is the third biggest chocolate producer and confectionery company in the world.
 It was founded in 1946 in Alba, Piedmont, Italy, by Pietro Ferrero, a confectioner and small-time pastry maker who laid the groundwork for Nutella and famously added hazelnut to save money on chocolate.
 The company saw a period of tremendous growth and success under Pietro's son Michele Ferrero, who in turn handed over the daily operations to his sons.
 His son Pietro (the founder's grandson), who oversaw global business, died on April 18, 2011, in a cycling accident in South Africa at the age of 47.
 The Ferrero Group worldwide – now headed by CEO Giovanni Ferrero – includes 38 trading companies, 18 factories, approximately 21,500 employees and produces around 365,000 tonnes of Nutella each year.
 Ferrero International SA's headquarters is in Luxembourg.
 Ferrero SpA is a private company owned by the Ferrero family and has been described as "one of the world's most secretive firms".
 Reputation Institute's 2009 survey ranks Ferrero as the most reputable company in the world.
 The recently announced financial results for the fiscal year ending August 31, 2016 showed consolidated sales growth of 8.2% from the previous fiscal year.
GEM Altigliss Challenge is the biggest ski and snowboard student event in Europe.
 The week-long event is organized annually in March by Altigliss, a student association of Grenoble École de Management.
 It is classified by the newspaper Le Point Etudiants as the third biggest event organized by a student association in 2013.
 GEM Altigliss Challenge is the biggest ski and snowboard student event in Europe.
 The week-long event is organized annually in March by Altigliss, a student association of Grenoble École de Management.
 The challenge unites an average of a 1000 university students combining more than 25 nationalities, from 30 Grandes écoles and other European universities.
 The challenge is held at Val-d’Isère, ski resort in the Rhône-Alpes region of France.
World Chocolate Wonderland (, literally, "World Chocolate Dream Park") is the first chocolate theme park in China.
 Located in Beijing to the north of the Bird's Nest, its grand opening was on January 29, 2010.
 It houses the world's biggest chocolate model of the Great Wall of China.