Complex sentence: Hefeweizen, is a variety of wheat beer in which the yeast is not filtered out, though Kristallweizen (clear), Dunkelweizen (dark) and Weizenstarkbier (higher alcohol content) varieties are available, they are not considered true hefeweizen unless left unfiltered.
Split into simpler sentences: Hefeweizen, is a variety of wheat beer in which the yeast is not filtered out. Though Kristallweizen (clear), Dunkelweizen (dark) and Weizenstarkbier (higher alcohol content) varieties are available, they are not considered true hefeweizen unless left unfiltered.