| http://www.w3.org/ns/prov#value | - It is written in golden letters on dark blue vellum, and one may assume that cross-relations with Byzantium may have inspired the artist, since the use of purple and other colored paper for official Byzantine documents is attested. (A good example is the purple letter sent by Constantine VII Porphyrogenetos to cAbdur-Rahman of Cordova in 949.) Another possible source of influence may be Manichean
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