Assertion: spiral minaret | /r/HasProperty | completed in the year
Facets:
value: by the abbasid caliph
type: TEMPORAL
Source sentences:
text: The Spiral Minaret, also known as the Malwiya Minaret, is part of the Great Mosque of Samarra in Iraq, completed back in the year 851 by the Abbasid caliph Al-Mutawakkil.