who is associated with the musical artists from slaughterhouse and knoc-turn'al ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_associatedMusicalArtist dbr_Slaughterhouse_ attr_open group attr_close sep_dot var_uri dbo_associatedMusicalArtist dbr_Knoc-turn'al sep_dot var_uri a dbo_MusicalArtist brack_close