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

Which of the following classes does '"Why raven is bald."' belong to? Context: "Terminal motif A2317.5"

A. "Tribal characteristics--industry."
B. "Why certain animals are bare of covering."
C. "Origin of birds."
D. "Appearances of ravens."

Answer: "Why certain animals are bare of covering."