Assertion: poison ivy's urushiol | /r/HasProperty | oily resin
Facets:
Source sentences:
text: Its toxicity is based on an active irritant principle known as "urushiol," an oily resin contained in all parts of the plant.
text: Urushiol is an oily resin that can be found in the leaves, stems, and roots of all three plants!
text: The urushiol is an oily resin that is found in the stems, roots, and leaves of poison ivy.
text: But let’s get the basics of our irritating plants down first, since five of them are related by one thing, urushiol, an oily resin that can irritate your skin.
text: Urushiol is the oily resin that causes allergic rash on the skin.