Complex sentence: During the Holocaust, gas chambers were designed to accept large groups as part of the Nazi policy of genocide against the Jews, the Romani people, homosexuals, the physically and mentally disabled, intellectuals, and the clergy.
Split into simpler sentences: During the Holocaust, gas chambers were designed to accept large groups as part of the Nazi policy of genocide against the Jews. Nazis also targeted the Romani people, homosexuals, physically and mentally disabled, intellectuals and the clergy.