Complex sentence: There is also a legend which tells of a siege of Ostrava during which the besieged townspeople released unbridled horses to run in circles around the town; this is said to have confused the attacking armies so much that they fled.
Split into simpler sentences: There is also a legend which tells of a siege of Ostrava during which the besieged townspeople released unbridled horses to run in circles around the town. This is said to have confused the attacking armies so much that they fled.