"This frame element is defined as the number of times an event occurs per some unit of time."@en . . . "Fre" . "12082"^^ . . . "2008-01-30T11:46:06+01:00"^^ . "Frequency" . "Frequency"^^ . "Frequency" . . . . "This frame element is defined as the number of times an event occurs per some unit of time."@en . "Extra-Thematic"^^ . "Extra-Thematic" . "JKs" . "This frame element is defined as the number of times an event occurs per some unit of time."^^ .