"2015-08-29T12:40:20+02:00"^^ . "This frame element is defined as the number of times an event occurs per some unit of time."@en . . "fre" . . . . "Extra-Thematic" . "16635"^^ . "This frame element is defined as the number of times an event occurs per some unit of time."@en . "Frequency" . . "MJE" . "Frequency" .