Assertion: river's bed | /r/HasProperty | raised
Facets:
value: materially
type: MANNER
value: despite the clearance of sediment
type: OTHER
Source sentences:
text: Longitudinal sections of the Po River, taken in 1874 and 1901, show that its bed was materially raised during this period from the confluence of the Ticino to below Caranella, despite the clearance of sediment effected by the rush through breaches.[citation needed]