<prompt> Translate the following text to EnglishKando ya ukuta wa kusini kuna Deesis, mosaiki ya ajabu ya karne ya 13 inayoonyesha Kristo akiwa amefungwa na Bikira Maria na Mtakatifu Yohana Mbatizaji.  <response>: By the south wall is the famous Deesis, an extraordinary 13th-century mosaic showing Christ flanked by the Virgin Mary and St. John the Baptist. 