Complex sentence: In Moscow Kuhlmann lived in the house of an adherent named Conrad Nordermann until both men were denounced as theologically and politically dangerous, were arrested and tortured, and finally burned at the stake for heresy.
Split into simpler sentences: In Moscow Kuhlmann lived in the house of an adherent named Conrad Nordermann. Eventually, however, both men were denounced as theologically and politically dangerous, were arrested and tortured, and finally burned at the stake for heresy.