Premise: Grabina (German: Grabine ) is a village in the administrative district of Gmina Biała, within Prudnik County, Opole Voivodeship, in south-western Poland. It lies approximately 5 km north of Biała Prudnicka, 14 km north of Prudnik, and 33 km south-west of the regional capital Opole.
Hypothesis: Polish people have the ability to speak German