Question: What mountain range separates the continent where the first leg of Queen's mid 2000s tour with Electric's performer from Asia?

full_context: Document 1: Queen (band): In May 2011, Jane's Addiction vocalist Perry Farrell noted that Queen are currently scouting their once former and current live bassist Chris Chaney to join the band. Farrell stated: "I have to keep Chris away from Queen, who want him and they're not gonna get him unless we're not doing anything. Then they can have him." In the same month, Paul Rodgers stated he may tour with Queen again in the near future. At the 2011 Broadcast Music, Incorporated (BMI) Awards held in London on 4 October, Queen received the BMI Icon Award in recognition for their airplay success in the US. At the 2011 MTV Europe Music Awards on 6 November, Queen received the Global Icon Award, which Katy Perry presented to Brian May. Queen closed the awards ceremony, with Adam Lambert on vocals, performing "The Show Must Go On", "We Will Rock You" and "We Are the Champions". The collaboration garnered a positive response from both fans and critics, resulting in speculation about future projects together.
Document 2: Geography of Russia: Truly alpine terrain appears in the southern mountain ranges. Between the Black and Caspian seas, the Caucasus Mountains rise to impressive heights, forming a boundary between Europe and Asia. One of the peaks, Mount Elbrus, is the highest point in Europe, at 5,642 meters. The geological structure of the Caucasus extends to the northwest as the Crimean and Carpathian Mountains and southeastward into Central Asia as the Tian Shan and Pamirs. The Caucasus Mountains create an imposing natural barrier between Russia and its neighbors to the southwest, Georgia and Azerbaijan.
Document 3: Electric (Paul Rodgers album): Electric (fully as Paul Rodgers Electric according to Paul Rodgers official site) is a studio album by Paul Rodgers of Free and Bad Company fame. It was recorded in 1999 at Lartington Hall Studios near Barnard Castle in the North East of England. Electric was released in 2000 (the Japanese version of 1999 has a bonus track).
Document 4: Now and Live: Now & Live is a double CD compilation-like album released in 1997 by Paul Rodgers of Free and Bad Company fame. In fact, it is a re-release of the studio album "Now" including a disc of live material recorded in 1995 and issued on the album "".
Document 5: Queen (band): On 15 August 2006, Brian May confirmed through his website and fan club that Queen + Paul Rodgers would begin producing their first studio album beginning in October, to be recorded at a "secret location". Queen + Paul Rodgers performed at the Nelson Mandela 90th Birthday Tribute held in Hyde Park, London on 27 June 2008, to commemorate Mandela's ninetieth birthday, and again promote awareness of the HIV/AIDS pandemic. The first Queen + Paul Rodgers album, titled The Cosmos Rocks, was released in Europe on 12 September 2008 and in the United States on 28 October 2008. Following the release of the album, the band again went on a tour through Europe, opening on Kharkiv's Freedom Square in front of 350,000 Ukrainian fans. The Kharkiv concert was later released on DVD. The tour then moved to Russia, and the band performed two sold-out shows at the Moscow Arena. Having completed the first leg of its extensive European tour, which saw the band play 15 sold-out dates across nine countries, the UK leg of the tour sold out within 90 minutes of going on sale and included three London dates, the first of which was The O2 on 13 October. The last leg of the tour took place in South America, and included a sold-out concert at the Estadio José Amalfitani, Buenos Aires.
Document 6: The Hendrix Set: The Hendrix Set is a live EP by Paul Rodgers of Free and Bad Company fame. Released 2 November 1993, "The Hendrix Set" consists of covers of five of Jimi Hendrix's songs. It was recorded live at Bayfront Park in Miami, Florida on 4 July 1993.
Document 7: Queen (band): Between 2005 and 2006, Queen + Paul Rodgers embarked on a world tour, which was the first time Queen toured since their last tour with Freddie Mercury in 1986. The band's drummer Roger Taylor commented; "We never thought we would tour again, Paul [Rodgers] came along by chance and we seemed to have a chemistry. Paul is just such a great singer. He's not trying to be Freddie." The first leg was in Europe, the second in Japan, and the third in the US in 2006. Queen received the inaugural VH1 Rock Honors at the Mandalay Bay Events Center in Las Vegas, Nevada, on 25 May 2006. The Foo Fighters paid homage to the band in performing "Tie Your Mother Down" to open the ceremony before being joined on stage by May, Taylor, and Paul Rodgers, who played a selection of Queen hits.
Document 8: Geography of Europe: Europe is traditionally defined as one of seven continents. Physiographically, it is the northwestern peninsula of the larger landmass known as Eurasia (or the larger Afro - Eurasia); Asia occupies the eastern bulk of this continuous landmass and all share a common continental shelf. Europe's eastern frontier is delineated by the Ural Mountains in Russia. The southeast boundary with Asia is not universally defined, but the modern definition is generally the Ural River or, less commonly, the Emba River. The boundary continues to the Caspian Sea, the crest of the Caucasus Mountains (or, less commonly, the river Kura in the Caucasus), and on to the Black Sea. The Bosporus, the Sea of Marmara, and the Dardanelles conclude the Asian boundary. The Mediterranean Sea to the south separates Europe from Africa. The western boundary is the Atlantic Ocean. Iceland, though on the Mid-Atlantic Ridge and nearer to Greenland (North America) than mainland Europe, is generally included in Europe for cultural reasons and because it is over twice as close to mainland Europe than to mainland North America. There is ongoing debate on where the geographical centre of Europe falls.
Document 9: Europe: This description is simplified. Sub-regions such as the Iberian Peninsula and the Italian Peninsula contain their own complex features, as does mainland Central Europe itself, where the relief contains many plateaus, river valleys and basins that complicate the general trend. Sub-regions like Iceland, Britain, and Ireland are special cases. The former is a land unto itself in the northern ocean which is counted as part of Europe, while the latter are upland areas that were once joined to the mainland until rising sea levels cut them off.
Document 10: Cut Loose: Cut Loose is the 1983 debut solo album by Paul Rodgers (of Free and Bad Company fame). Unlike his other work, Paul Rodgers plays all the instruments on this album. It was recorded at his house in Kingstone.
Document 11: Queen (band): At the end of 2004, May and Taylor announced that they would reunite and return to touring in 2005 with Paul Rodgers (founder and former lead singer of Free and Bad Company). Brian May's website also stated that Rodgers would be "featured with" Queen as "Queen + Paul Rodgers", not replacing Mercury. The retired John Deacon would not be participating. In November 2004, Queen were among the inaugural inductees into the UK Music Hall of Fame, and the award ceremony was the first event at which Rodgers joined May and Taylor as vocalist.
Document 12: Asia: Asia is the largest continent on Earth. It covers 9% of the Earth's total surface area (or 30% of its land area), and has the largest coastline, at 62,800 kilometres (39,022 mi). Asia is generally defined as comprising the eastern four - fifths of Eurasia. It is located to the east of the Suez Canal and the Ural Mountains, and south of the Caucasus Mountains (or the Kuma -- Manych Depression) and the Caspian and Black Seas. It is bounded on the east by the Pacific Ocean, on the south by the Indian Ocean and on the north by the Arctic Ocean. Asia is subdivided into 48 countries, three of them (Russia, Kazakhstan and Turkey) having part of their land in Europe.
Document 13: Asia: Asia is the largest continent on Earth. It covers 8.8% of the Earth's total surface area (or 30% of its land area), and has the largest coastline, at 62,800 kilometres (39,022 mi). Asia is generally defined as comprising the eastern four - fifths of Eurasia. It is located to the east of the Suez Canal and the Ural Mountains, and south of the Caucasus Mountains (or the Kuma -- Manych Depression) and the Caspian and Black Seas. It is bounded on the east by the Pacific Ocean, on the south by the Indian Ocean and on the north by the Arctic Ocean. Asia is subdivided into 48 countries, three of them (Russia, Kazakhstan and Turkey) having part of their land in Europe.
Document 14: Live: The Loreley Tapes: Live: The Loreley Tapes... is a live album by Paul Rodgers of Free and Bad Company fame. It was recorded at the Rockpalast Open Air Festival, at Loreley, Germany on 8 July 1995 and released in 1996.
Document 15: Queen (band): Brian May and Roger Taylor performed together at several award ceremonies and charity concerts, sharing vocals with various guest singers. During this time, they were billed as Queen + followed by the guest singer's name. In 1998, the duo appeared at Luciano Pavarotti's benefit concert with May performing "Too Much Love Will Kill You" with Pavarotti, later playing "Radio Ga Ga", "We Will Rock You", and "We Are the Champions" with Zucchero. They again attended and performed at Pavarotti's benefit concert in Modena, Italy in May 2003. Several of the guest singers recorded new versions of Queen's hits under the Queen + name, such as Robbie Williams providing vocals for "We Are the Champions" for the soundtrack of A Knight's Tale (2001).
ground_truth: the Ural Mountains
sub_queries: Electric >> performer Answer: Paul Rodgers
Where was the first leg of Queen's mid 2000s tour with Paul Rodgers ? Answer: Europe
the mountain range that separates Europe from asia is Answer: the Ural Mountains