Assertion: cobalt | /r/HasProperty | attacked by oxygen
Facets:
value: by water vapour
type: OTHER
value: at elevated temperatures
type: TEMPORAL
value: with the result
type: OTHER
Source sentences:
text: Cobalt is also attacked by oxygen and by water vapour at elevated temperatures, with the result that cobaltous oxide, CoO (with the metal in the +2 state), is produced.