Assertion: poison ivy's urushiol | /r/HasProperty | the chemical
Facets:
value: in poison ivy plants
type: LOCATION
Source sentences:
text: Urushiol is the chemical in all of these plants that causes the typical allergic reaction and symptoms of a poison oak rash.
text: Urushiol is the chemical in poison ivy (and poison oak and sumac) that causes an allergic reaction.
text: Urushiol is the chemical in poison ivy plants that causes the typical allergic reaction and symptoms of poison ivy rashes.
text: Urushiol is the chemical in poison ivy plants that causes the typical allergic reaction and symptoms of poison ivy rashes.