Assertion: radon | /r/HasProperty | concern
Facets:
Source sentences:
text: Radon is only a concern if your drinking water comes from underground, such as a well that pumps water from an aquifer,
text: Radon is a concern if your drinking water comes from an underground source, such as well that pumps water from an aquifer.
text: What is Radon & Why is it a concern?
text: What is Radon & Why is it a concern?