Assertion: corrosion | /r/AtLocation | metal
Facets:
value: usually
type: TEMPORAL
value: at some time
type: TEMPORAL
Source sentences:
text: Corrosion occurs in all metals at some time and can be divided into four basic forms.
text: Corrosion can occur on different surfaces such as skin, wood, metals, etc.
text: This corrosion is much less predictable, and usually occurs in metals where the composition is not uniform.
text: Corrosion is a chemical change that usually occurs in metals that come into contact with an electrolyte.