Assertion: polonium | /r/HasProperty | decaying
Facets:
Source sentences:
text: 218 Po, 3.10 minutes, alpha decaying to...
text: Po, 3.10 minutes, alpha decaying to...
text: Po, 0.1643 ms, alpha decaying to... 210 Pb, which has a much longer half-life of 22.3 years,