Assertion: verdigris | /r/CapableOf | act of a sort of catalyst
Facets:
value: as a transport mechanism
type: MANNER
value: for the reaction
type: PURPOSE
Source sentences:
text: Pure water or moisture in of itself does not cause verdigris, however, impurities present in water (namely carbon dioxide) can cause verdigris and it also acts of a sort of catalyst for the reaction, mainly as a transport mechanism.