Assertion: cobalt | /r/ObjectUse | used in electroplating
Facets:
value: because of resistance
type: CAUSE
value: for hardness
type: PURPOSE
value: for resistance
type: PURPOSE
Source sentences:
text: Cobalt is used in electroplating for its attractive appearance, hardness, and resistance to oxidation.
text: It is used in electroplating because of its hardness and resistance to oxidation.