Assertion: magnesium sulfate's magnesium | /r/HasProperty | obtained
Facets:
value: from seawater
type: LOCATION
value: most often
type: DEGREE
Source sentences:
text: Magnesium can also be obtained from herbal sources, such as red raspberries.
text: Today, magnesium can be extracted from the minerals dolomite (CaCO 3 ·MgCO 3 ) and carnallite (KCl·MgCl 2 ·6H 2 O), but is most often obtained from seawater.