Question: What is a historically significant part of a historical region of Silesia presently located in the Czech Republic that its area is 316.9 km2?
Sentence (from "Hlučín Region"): Hlučín Region (Czech: "Hlučínsko" (familiarly "Prajzsko"), German: "Hultschiner Ländchen" , Polish: "Kraik hulczyński" ) is a historically significant part of Czech Silesia, today a part of the Moravian-Silesian Region in the Czech Republic, named after its largest town Hlučín.
Relevant evidence: Yes