Mainz is the capital of which German state?

Schwerin is the capital of which German state? What is the capital of the German state of North Rhine-Westphalia? Düsseldorf is the capital of which German state? What is the capital of the German state of Rhineland-Palatinate? What is the capital of the German state of Saarland? Saarbrücken is the capital of which German state? What is the capital of the German state of Saxony? Dresden is the capital of which German state?