Assertion: iron ore | /r/HasProperty | rock
Facets:
value: in accessibility to mining and transportation
type: OTHER
value: in sufficient volume
type: OTHER
value: to be able
type: PURPOSE
Source sentences:
text: Iron ore is rock which metallic iron can be extracted from.
text: Iron ore is rock containing enough iron content, and in sufficient volume and accessibility to mining and transportation to be able to be economically mined.
text: Iron ores are rocks and minerals from which metallic iron can be economically extracted.