Assertion: astatine's existence | /r/HasProperty | short-lived
Facets:
Source sentences:
text: There should be tiny quantities of Astatine in the earth's crust as products of other radioactive decays, but their existence would be short-lived.
text: There should be tiny quantities of astatine in the earth's crust as products of other radioactive decays, but their existence would be short-lived.