Assertion: arsenic | /r/HasProperty | natural origin
Facets:
Source sentences:
text: The arsenic in the groundwater is of natural origin, and is released from the sediment into the groundwater, caused by the anoxic conditions of the subsurface.
text: The arsenic in the groundwater is of natural origin, and is released from the sediment into the groundwater, caused by the anoxic conditions of the subsurface.