Assertion: technetium | /r/AtLocation | uranium ores
Facets:
value: naturally
type: MANNER
value: on earth
type: LOCATION
value: as a product of spontaneous fission
type: CAUSE
Source sentences:
text: On earth, technetium occurs naturally only in uranium ores as a product of spontaneous fission.
text: On earth, technetium occurs naturally only in uranium ores as a product of spontaneous fission.
text: On earth, technetium occurs naturally only in uranium ores as a product of spontaneous fission; the quantities are minute but have been measured.