Assertion: polonium | /r/HasAspect | short half life
Facets:
value: far
type: TEMPORAL
value: for any significant amount
type: OTHER
Source sentences:
text: As you point out, polonium (all isotopes of it) has far too short half life for any significant amount to be still around from the formation of the Earth.
text: It is highly radioactive and has a short half-life, so its natural abundance is very limited and is present in trace amounts.