Assertion: neptunium | /r/AtLocation | nuclear reactor
Facets:
Source sentences:
text: Neptunium was once a very rare element, but it can now be somewhat easily produced in a nuclear reactor.
text: Neptunium was once a very rare element, but it can now be somewhat easily produced in a nuclear reactor.
text: Neptunium was once a very rare element, but it can now be somewhat easily produced in a nuclear reactor.