Assertion: allergy | /r/HasProperty | major cause of illness
Facets:
value: in the united states
type: LOCATION
Source sentences:
text: Allergies are a major cause of illness in the United States.
text: Allergy is one of the major factors associated with the cause and persistence of asthma.
text: Although allergies are a major contributing factor to asthma, the influence of allergy on asthma isn't always obvious.