Complex sentence: The political expression of these irredentist hopes is called the Karelian question and is about for Finland's re-acquisition of the ceded Finnish Karelia live on in for instance the "Karjalan Liitto" and ProKarelia.
Split into simpler sentences: The political expression of these irredentist hopes is called the Karelian question and is about Finland's re-acquisition of the ceded Finnish Karelia. These hopes live on, for instance, in the "Karjalan Liitto" and ProKarelia.