Original sentence: Ziemiak was born in Szczecin, Polish People's Republic
Edited sentence: Ziemiak was born in Szczecin, Polish People's Republic, a disputed city (known as Stettin in German) that was at the time still formally, if no longer very actively, claimed by the Federal Republic of Germany after being unilaterally annexed from Germany during the Stalin-era Soviet occupations of both Poland and a part of Germany; Germany gave up claims on the city in 1990