Assertion: metal | /r/HasProperty | rare
Facets:
value: very
type: DEGREE
Source sentences:
text: Familiarity information: METALLIC ELEMENT used as a noun is very rare.
text: The metallic elements are extremely rare; the production of metallic yttrium is about a few tonnes, and that of scandium is in the order of 10 kg per year; production of lutetium is not calculated, but it is certainly small.