Assertion: blackberry's root | /r/CapableOf | reduce the toxicity of the herb
Facets:
value: to treat cancerous tumors
type: PURPOSE
Source sentences:
text: The plants' teratogenic properties and ability to induce severe birth defects were well known to Native Americans, although they also used minute amounts of the winter-harvested root (combined with Salvia dorii to potentiate its effects and reduce the toxicity of the herb) to treat cancerous tumors.