Assertion: uranium | /r/HasProperty | a power source
Facets:
value: for a very long time
type: TEMPORAL
Source sentences:
text: Hubbert saw oil as a resource which would soon run out, but he believed that uranium had much more promise as an energy source, and that breeder reactors and nuclear reprocessing, which were new technologies at the time, would allow uranium to be a power source for a very long time.