list the people with final resting place as archcathedral basilica of st . peter and st . paul and has bolesław the pious as predecessor ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_restingPlace dbr_Archcathedral_Basilica_of_St._Peter_and_St._Paul,_Poznań sep_dot var_uri dbp_predecessor dbr_Bolesław_the_Pious sep_dot var_uri a dbo_Person brack_close