. . "2005-04-18T17:34:57+02:00"^^ . . "Duration_of_state" . "The Duration_of_state is the period of time over which the research takes place. That particular think tank researched population change for over three decades."@en . "RLG" . . "The Duration_of_state is the period of time over which the research takes place. That particular think tank researched population change for over three decades."@en . "The Duration_of_state is the period of time over which the research takes place.\nThat particular think tank researched population change for over three decades."^^ . "Duration_of_state" . "Duration_of_state"^^ . "7817"^^ . . . "Extra-Thematic"^^ . "Extra-Thematic" . "dur" . .