Question: Whose defeat ended the anti-Polish campaign that began with the idea to unify all the German and possibly also Germanic-speaking peoples in a single nation-state known as "Großdeutschland".?
{'answer': 'Nazi Germany', 'supporting_facts': [['Expulsion of Poles by Germany', 0], ['Expulsion of Poles by Germany', 1], ['Expulsion of Poles by Germany', 4], ['Pan-Germanism', 1]]}