Simplify the following text for a Grade 11 native English-speaking person.
Original: Joseba Sarrionandia Uribelarrea ( Iurreta , Biscay , April 13 , 1958 -- ) is a Basque writer and member of the independentist Basque separatist group ETA .
Simplified: Joseba Sarrionandia Uribelarrea ( born April 13th 1958 in Iurreta , Biscay , Basque Country ) is a Basque writer and a member of the Basque armed group ETA .