The Wikipedia snippet below is not backed by a reliable source. Can you find one?
Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!
In page Lviv:
"At that time, Lviv witnessed a historic scene, as here King John II Casimir made his famous Lwów Oath. On 1 April 1656, during a holy mass in Lviv's Cathedral conducted by the papal legate Pietro Vidoni, John Casimir in a grandiose and elaborate ceremony entrusted the Commonwealth under the Blessed Virgin Mary's protection, whom he announced as The Queen of the Polish Crown and other of his countries. He also swore to protect the Kingdom's folk from any impositions and unjust bondage.[citation needed]