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

Which of the following classes does '"Invisible water-spirit claps hands and speaks."' belong to? Context: "Terminal motif F420.1.5.1"

A. "Water-spirits invisible."
B. "Water-spirit as man."
C. "Marriage or liaison of mortals and water-spirits."
D. "Water-spirits live in castles of crystal under water."

Answer: "Water-spirits invisible."