Assertion: ricin's toxicity | /r/HasProperty | due
Facets:
value: to the presence of ricin
type: CAUSE
Source sentences:
text: The toxicity of raw castor beans is due to the presence of ricin.
text: The toxicity of the meal could be due to either a heat stable or growth inhibiting factor or due to minute residues of ricin"(Okoye et al.)