Assertion: seawater's magnesium | /r/HasProperty | the fourth most common element
Facets:
value: after oxygen
type: OTHER
value: in the earth
type: LOCATION
value: after silicon
type: OTHER
value: after iron
type: OTHER
Source sentences:
text: Magnesium is the eighth most abundant element in the Earth's crust and the fourth most common element in the Earth (after iron, oxygen and silicon), making up 13% of the planet's mass and a large fraction of the planet's mantle.