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Beli Orao was a royal yacht built for the Yugoslav Royal Navy in 1938–1939. She was captured in April 1941 by the Italians during the World War II invasion of Yugoslavia by the Axis powers. Re-armed, she saw service as a gunboat in the Italian Royal Navy, briefly as Alba then Zagabria, undertaking harbour protection and coastal escort duties. She was then used to train anti-submarine warfare specialists. After the Italian armistice with the Allies in September 1943, she was handed back to the Yugoslav navy-in-exile on 7 December. Refitted, and under her original name, she became a tender for a flotilla of motor gunboats. In this role she operated out of Malta, off the western coast of Italy, and later off the Yugoslav coast. The 2016 Sleaford and North Hykeham by-election took place on 8 December, triggered by the resignation of Member of Parliament (MP) Stephen Phillips, a Conservative, who left Parliament due to policy differences with Theresa May over Brexit. The constituency had been held by the Conservatives since it was first contested in the 1997 general election and was considered a safe seat for the party.Sleaford and North Hykeham was estimated to have had a vote share of more than 60 per cent in favour of leaving the EU in the June 2016 EU membership referendum and Brexit was a key issue in the by-election campaign..

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The Cape starling (Lamprotornis nitens) is a medium-sized passerine bird in the starling family, Sturnidae, found in southern Africa.

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that silicification can produce opal