Assertion: metal | /r/HasProperty | extracted by means of mining ores
Facets:
value: from the earth
type: LOCATION
value: often
type: TEMPORAL
Source sentences:
text: Metals are often extracted from the Earth by means of mining ores that are rich sources of the requisite elements, such as bauxite.
text: Metals are often extracted from the Earth by means of mining ores that are rich sources of the requisite elements, such as bauxite.