Summarize this content in well-structured paragraphs in German language and keep HTML tags Air traffic at Germany’s largest airport in Frankfurt has partially resumed after activists from the climate group Last Generation managed to gain access to the airport grounds.Take-offs and landings have resumed at the airport, but not all runways are fully operational yet, an airport spokesman said on Thursday morning.Police vehicles are parked near the tarmac at Frankfurt Airport. Air traffic has been temporarily suspended due to an action by climate activists. Mike Seeboth/TNN/dpaPolice vehicles are parked near the tarmac at Frankfurt Airport. Air traffic has been temporarily suspended due to an action by climate activists. Mike Seeboth/TNN/dpa