_Finally_ found the source for that entry

NorwegianList.txt

@@ -1,4 +1,4 @@
-! Version: 06October2020v2
+! Version: 08October2020v1
 ! Title: 🏔️ Dandelion Sprouts nordiske filtre for ryddigere nettsider
 ! Translated title: Dandelion Sprout's Nordic filters for tidier websites
 ! Expires: 1 day
@@ -22,7 +22,6 @@
 ! 🇬🇧: ——— Advertisements ———
 ##.annonselenker
 ##.full-width.daily-offers
-##.native-advertisement
 ##.sponset-innlegg
 ##a[href*="sting.de17a.com"]
 ##a[title=LeoVegas]
@@ -263,6 +262,8 @@ portal.fo##.ablock
 goal.com##.js-betting-widget.is-country-no:upward(2)
 ! doktor.frettabladid.is (18/09/2020)
 ##.hringekja__wrapper
+! borsen.no (08/10/2020)
+##.native-advertisement
 ! — — — — — — —
 ! 🇳🇴: Brede eller heldomenebaserte blokkeringsoppføringer
 ! 🇬🇧: Broad or whole-domain blocking rules