Assertion: earth metal | /r/HasProperty | inseparable
Facets:
value: from each other
type: OTHER
Source sentences:
text: According to Professor of chemistry, Andrea Sella, rare-earth elements differ from other elements, insofar that "rare-earth metals, when looked at anatomically, seem to be inseparable from each other, in that they are all almost exactly the same in terms of their chemical properties.