Question: When did the person who finished ahead of Chris Thompson in the 10,000 metres at the 2010 European Athletics Championships announce his intention to switch wholly to road racing?

Context paragraphs:
2010 European Athletics Championships: The 2010 European Athletics Championships were the 20th edition of the European Athletics Championships, organised under the supervision of the European Athletic Association.  They were held at the Estadi Olímpic Lluís Companys in Barcelona, Catalonia, Spain from 27 July to 1 August 2010.  Barcelona was the first Spanish city to host the European Championships.

Tony Simmons (athlete): Tony Simmons ("Anthony Derrick Simmons;" born 6 October 1948) is a former athlete.  He represented England in the 1974 British Commonwealth Games, finishing seventh in the 10,000 metres, and Wales in the 1978 Commonwealth Games, finishing sixth in the 10,000 metres and seventh in the 5,000 metres.  He won the silver medal in the 10,000 metres at the 1974 European Athletics Championships, finishing 4 hundredths of a second behind the gold medallist.  In the 1976 Summer Olympics he qualified for the finals of the 10,000 metres, finishing 4th.  He set a world best for the half-marathon at Welwyn Garden City, England on 24 June 1978 of 62 minutes 47 seconds.  The mark stood for nearly 16 months until eclipsed by Nick Rose.

Christoph Herle: Christoph Herle (born 19 November 1955 in Königstein im Taunus, Hessen) is a retired West German long-distance runner who specialized in the 10000 metres and cross-country running.  His first major international track race occurred in the 1978 European Athletics Championships in Prague, former Czechoslovakia, where he placed fourteenth in the 5,000-metre final (see Tapio Pekola et al., eds., "European Championships Prague" / EM-Praha, Kaarina, Finland: Publications Company Runner / Juoksija, 1978).  He ran slightly better in the 1982 European Athletics Championships 5,000-metre final in Athens, Greece, placing thirteenth (see Markku Siukonen and Matti Aho, eds., "The Great European Championships Book" / Suuri EM-kirja, Jyväskylä, Finland: Sportti Kustannus / Sport Publications Oy / Ltd., 1990).  Herle ran best in 1983 and 1984, placing eighth at the 1983 World Athletics Championships 10,000-metre final in Helsinki, Finland (see, for example, Mikko S. Laitinen et al., eds., "World Athletics Championships 1983" / Yleisurheilun maailmanmestaruuskilpailut 1983, Salt Lake City, Utah, USA: International Sport Publications, 1983), and fifth at the 1984 Summer Olympics 10,000-metre final in Los Angeles, the United States (see, for example, "The Big Olympic Book 4" / Suuri Olympiateos 4, published in Finland in 1984).  He never managed to rise to the very top of international long-distance runners, however.  His final major international championships race was the 1986 European Athletics Championships 10,000-metre race in Stuttgart, then West Germany, where he placed a disappointed fifteenth (see Siukonen and Aho, eds., "The Great European Championships Book").

Mo Farah: Sir Mohamed Muktar Jama "Mo" Farah, {'1': ", '2': ", '3': ", '4': "} (Somali: "Maxamed Mukhtaar Jaamac Faarax" ; born 23 March 1983) is a British distance runner.  On the track, he mostly competed over 5000 metres and 10,000 metres, but has run competitively from 1500 metres to the marathon.  In 2017 he indicated his intention to switch wholly to road racing following victory at his final track race, the 2017 IAAF Diamond League 5000 metres final.

Linus Thörnblad: Linus Thörnblad (born 6 March 1985) is a Swedish former track and field athlete competing in high jump.  He won the bronze medal at the 2006 IAAF World Indoor Championships and a silver medal at the 2007 European Athletics Indoor Championships.  He represented Sweden at the Summer Olympics in 2004 and 2008 and finished fourth at the 2010 European Athletics Championships.  He has a personal best of 2.38 metres set indoors.

Pablo Villalobos: Pablo Villalobos (born 20 May 1979) is a Spanish long-distance runner.  He finished seventh in the 5,000m final at the 2006 European Athletics Championships in Gothenburg and fifth in the marathon at the 2010 European Athletics Championships in Barcelona.  In 2013 created of campoatraves.com, a Spanish website about the athletics long distance of cross country.

List of European Athletics Championships records: The European Athletics Championships is a quadrennial event which began in 1934.  European Athletics accepts only athletes who are representing one of the organisation's European member states and the body recognises records set at editions of the European Athletics Championships.  The Championships records in athletics are the best marks set in competitions at the event.  The athletics events at the Championships are divided into four groups: track events (including sprints, middle- and long-distance running, hurdling and relays), field events (including javelin, discus, hammer, pole vault, long and triple jumps), road events and combined events (the heptathlon and decathlon).

Chris Thompson (athlete): Christopher "Chris" Thompson (born 17 April 1981) is a British long-distance runner, who won the silver medal in the 10,000 metres at the 2010 European Athletics Championships in Barcelona, on 27 July 2010 behind his compatriot Mo Farah.  Prior to his 2010 medal win he had won the European U23 5000 m Championship in 2003.  However he was initially unable to build on this victory, as he had substantial injury problems for a number of years.  He is currently coached by bronze Olympic medallist, Mark Rowland.

Ivet Lalova-Collio: Ivet Miroslavova Lalova-Collio (Bulgarian: Ивет Мирославова Лалова-Колио , born 18 May 1984 in Sofia) is a Bulgarian athlete who specialises in the 100 metres and 200 metres sprint events.  She is the 12th-fastest woman in the history of the 100 metres and is tied with Irina Privalova for the fastest time by a sprinter not of West African descent.  She finished fourth in the 100 metres and fifth in the 200 metres at the 2004 Summer Olympics.  Her career was interrupted for two years between June 2005 and May 2007 due to a leg injury.  In June 2012 she won gold at the 2012 European Athletics Championships in the Women's 100 metres.  In July 2016 she won two silver medals at the 2016 European Athletics Championships in both the Women's 100 and 200 metres.  She participated at four editions of the Olympic Games.

Lukas Rifesser: Lukas Rifesser (born 17 July 1986, Bruneck, South Tyrol, Italy) is an Italian middle-distance runner.  He has won the Italian Athletics Championships twice, once in the 800 metres (2010) and once in the 1500 metres (2008).  Rifesser has also competed in the World Youth Championships, World Championships and the World Indoor Championships.  He represented his country at the 2010 European Athletics Championships.

Supporting paragraphs: Chris Thompson (athlete) Mo Farah
Answer: 2017