occupied Seville in 844
... that when the Vikings occupied Seville in 844, they tried unsuccessfully to burn the city's great mosque?
... that when the Vikings <b id="mwBKk"><a class="mw-redirect" href="./Viking_raid_on_Seville_(844)" id="mwBKo" rel="mw:WikiLink" title="Viking raid on Seville (844)">occupied Seville in 844</a></b>, they tried unsuccessfully to burn the city's great mosque?