<prompt> Translate the following text to EnglishWaislamu walichukua Kaisaria kutoka kwa Wa-Byzantium mwaka 639 na Waislamu waliwashinda Waislamu mwaka 1101 na kugundua chombo cha kioo cha kijani ambacho walidai kuwa ni Kikombe cha Mtakatifu, kikombe ambacho Yesu na wanafunzi wake walikunywa wakati wa Chakula cha Mwisho.  <response>: The Arabs captured Caesarea from the Byzantines in a.d. 639 and the Crusaders conquered the Arabs in 1101, discovering a green crystal vessel which they claimed to be the Holy Grail, the cup from which Jesus and his disciples drank during the Last Supper it now reposes in Genoa. 