Assertion: poison ivy's leaf | /r/MadeOf | urushiol
Facets:
value: according to an internet site
type: OTHER
Source sentences:
text: The fruit and leaves of the poison sumac plant contain urushiol, an oil that causes an allergic rash upon contact with skin.
text: If the leaf contains urushiol, the chemical in the cloth will react with it, turning bright pink.
text: The leaves of the Cashew Tree also contain urushiol according to an internet site called wisegeek.