Assertion: radon | /r/HasProperty | known pollutant
Facets:
Source sentences:
text: Radon is a known pollutant emitted from geothermal power stations because it is present in the material pumped from deep underground.
text: Radon is a known carcinogen, a substance capable of causing cancer in living tissue.
text: Radon is the heaviest known gas, nine times heavier than air.
text: Radon is a known pollutant emitted from geothermal power stations because it is present in the material pumped from deep underground.
text: It is a known carcinogen because ionizing radiation can modify DNA and cause mutations and other harmful effects.