who is associated with the musical artists from tool and janis joplin ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_associatedMusicalArtist dbr_Tool_ attr_open band attr_close sep_dot var_uri dbo_associatedMusicalArtist dbr_Janis_Joplin sep_dot var_uri a dbo_MusicalArtist brack_close