Assertion: boron | /r/CapableOf | occur as boric acid
Facets:
value: in salts of polyboric acids
type: OTHER
value: mainly
type: DEGREE
value: naturally
type: MANNER
Source sentences:
text: Boron naturally occurs mainly as boric acid and as boric acid salts.
text: It occurs as boric acid (H3BO3), and in salts of polyboric acids, which usually have very complicated formulas.