Complex sentence: Perm (21 March), Tyumen (24 March), and Yekaterinburg (26 March) where the Russian Tsar Nicholas II and his family were executed.
Split into simpler sentences: Perm (21 March), Tyumen (24 March), and Yekaterinburg (26 March). Yekaterinburg is where the Russian Tsar Nicholas II and his family were executed.