Assertion: corrosion | /r/HasProperty | the deterioration of a metal
Facets:
value: due to natural processes
type: CAUSE
value: mostly
type: DEGREE
Source sentences:
text: Corrosion is the deterioration of a metal as a result of chemical reactions between it and the surrounding environment.
text: Corrosion is the gradual destruction of metals (mostly) due to natural processes, of which the main is oxidation, although there are others.