Assertion: carbon monoxide | /r/Causes | restlessness
Facets:
value: at low concentrations
type: LOCATION
Source sentences:
text: At low concentrations, carbon monoxide may cause nausea, vomiting, restlessness, and euphoria.
text: At low concentrations, carbon monoxide may cause nausea, vomiting, restlessness, and euphoria (a feeling of well-being).