Assertion: caliph's role | /r/HasProperty | replaced by persian bureaucracy
Facets:
value: slowly
type: MANNER
Source sentences:
text: This eventually meant that many Abbasid caliphs were relegated to a more ceremonial role than under the Umayyads, as the viziers began to exert greater influence, and the role of the old Arab aristocracy was slowly replaced by a Persian bureaucracy.