Assertion: polonium's compound | /r/CapableOf | emit radioactive gas
Facets:
value: continuously
type: TEMPORAL
Source sentences:
text: Rutherford noticed that the compounds of thorium continuously emit a radioactive gas that remains radioactive for several minutes, and called this gas "emanation" (from Latin: emanare, to flow out, and emanatio, expiration), and later "thorium emanation" ("Th Em").