Simplify the following text for a Grade 14 native English-speaking person.
Original: That movement prompted the creation , on April 21 , 2005 , of the Office of the Director of National Intelligence ( DNI ) , in whose purview was the job portfolio that had been performed previously by the Director of Central Intelligence .
Simplified: That movement prompted the creation , on April 21 , 2005 , of the Office of the Director of National Intelligence ( DNI ) , whose responsibilities covered heading the Intelligence Community and advising the NSC .