. "Periodisierung"@de . _:b1 . _:b1 "Initiale Version"@de . _:b1 "2019-09-18T15:27:25+02:00" . _:b1 "Lena Vitt" . _:b2 . _:b2 "Lena Vitt" . _:b2 "2019-09-18T15:29:08+02:00" .