Assertion: caliphate's province | /r/HasProperty | both the iranian lands
Facets:
Source sentences:
text: Almost all the provinces of the empire, both the Iranian lands in the east (where the Ṣaffārids joined the Ṭāhirids and Sāmānids as an independent dynasty) and Syria and Egypt (where the Tūlūnids gained autonomy) to the west, had broken away.