Assertion: comfrey | /r/HasProperty | banned in australia
Facets:
value: because of toxicity
type: CAUSE
value: because of a paper
type: CAUSE
Source sentences:
text: Comfrey was banned in Australia because of a paper called, The structure and toxicity of the alkaloids of Russian comfrey (S. x uplandicum) a medicinal herb and item of human diet by Dr. C. Culvenor, et al, Australia, 1980.