Assertion: aluminum | /r/HasProperty | extracted to its pure form
Facets:
value: by friedrich wöhler
type: OTHER
value: in 1827
type: TEMPORAL
value: successfully
type: MANNER
Source sentences:
text: Aluminum was believed to be used by ancient Greeks and Romans as dyeing mordants and as astringents, though it was successfully extracted to its pure form by Friedrich Wöhler in 1827.