Assertion: light metal | /r/HasProperty | isolated
Facets:
value: from 1809
type: TEMPORAL
Source sentences:
text: From 1809 onwards, light metals such as sodium, potassium, and strontium were isolated.
text: From 1809 onwards, light metals such as sodium, potassium, and strontium were isolated.
text: From 1809 onwards, light metals such as sodium, potassium, and strontium were isolated.