Question: The oldest item in the Diocesan Museum depicts the battle of a the god of what ?
Sentence (from "Diocesan museum of sacred art (Arezzo)"): The Diocesan museum of sacred art in Arezzo (also known as MuDAS) was founded in 1963 but opened regularly to the public only in 1985, and was housed in several rooms above the sacristy of the Cathedral of San Donato.
Relevant evidence: No