Assertion: berkelium's discovery | /r/HasProperty | important step
Facets:
Source sentences:
text: Nevertheless its discovery was an important step towards the synthesis of the superheavy elements and has served to test theories of nuclear physics as well as showing that the predictions of the periodic table are fulfilled well beyond the elements for which it was originally devised.
text: Nevertheless its discovery was an important step towards the synthesis of the superheavy elements and has served to test theories of nuclear physics as well as showing that the predictions of the periodic table are fulfilled well beyond the elements for which it was originally devised.