instruktiv
instructif
instructive
instrutivo
d' Visitt 1 vun der Bibliothéik war wierklech instruktiv
https://lod.lu/uploads/examples/OGG/79/7942be118b397894c6239ff5d94e1eda.ogg
https://lod.lu/uploads/examples/AAC/79/7942be118b397894c6239ff5d94e1eda.m4a