Assertion: protactinium's isotope | /r/HasProperty | discovered by fajans
Facets:
Source sentences:
text: It was much easier to study than the isotope discovered by Fajans and Göhring.
text: It was much easier to study than the isotope discovered by Fajans and Göhring.
text: It was much easier to study than the isotope discovered by Fajans and Göhring.