Assertion: radon | /r/AtLocation | low levels
Facets:
value: in outdoor air
type: LOCATION
value: normally
type: DEGREE
value: very
type: DEGREE
value: outdoors
type: LOCATION
Source sentences:
text: It will normally be found at low levels in outdoor air and in the water from rivers and lakes.
text: Because radon can be found outdoors in low levels, everyone is exposed to it at some point.
text: It is normally found at very low levels in outdoor air and in drinking water from rivers and lakes.
text: Radon is normally found at very low levels in outdoor air.
text: It is normally found at very low levels in outdoor air and in drinking water from rivers and lakes.