Assertion: poison ivy's oil | /r/HasProperty | toxic
Facets:
Source sentences:
text: Poison ivy and poison oak have toxic oils in their leaves that cause painful and itchy skin rashes upon contact.
text: Poison ivy, oak, and sumac contain a toxic oil called urushiol.
text: Poison ivy and poison oak have toxic oils in their leaves that cause painful and itchy skin rashes upon contact.