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"Built in the 1920s in south central Berlin, the Tempelhof airport shut down in 2008 and reopened in May 2010 as a public park called Tempelhofer Freiheit."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/research-innovations/stories/big-snapshot-how-berlin-recycled-an-airport>