Assertion: xenon | /r/NotCapableOf | form compounds
Facets:
Source sentences:
text: Before 1962, it was generally assumed that xenon and other noble gases were unable to form compounds.
text: Before 1962, it was generally assumed that xenon and other noble gases were unable to form compounds.
text: Before 1962, it had generally been assumed that xenon and other noble gases were unable to form compounds.
text: Before 1962, it had generally been assumed that xenon and other noble gases were unable to form compounds.
text: Before 1962, it had generally been assumed that xenon and other noble gases were unable to form compounds.