Assertion: poison ivy's urushiol | /r/HasProperty | clear liquid compound
Facets:
value: in the plant's sap
type: LOCATION
Source sentences:
text: Urushiol, a clear liquid compound in the sap of each of these plants, is the culprit in causing the itching, redness and swelling associated with these three plants.
text: Urushiol is a clear liquid compound in the plant's sap.