The delicate ninth-century mosaics of Jesus and four angels make the Chapel of St. Zeno the city's most important Byzantine monument.
There are no mosaics on display in the Chapel of St. Zeno.  
mnli hypothesis: There are no mosaics on display in the Chapel of St. Zeno.   premise: The delicate ninth-century mosaics of Jesus and four angels make the Chapel of St. Zeno the city's most important Byzantine monument.