Task: Class Relation Understanding (ontology: Arts_Media_Entertainment/Propp)

Which of the following classes is the superclass of '"Serpent carried by bird lets poison drop into milk and poisons drinkers."'?

A. "Accidental poisoning."
B. "Poisoning by snake."
C. "Death by poison"
D. "Poisonous drink."

Answer: "Accidental poisoning."