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

Which of the following classes is the superclass of 'Water-spirits live in castles of crystal under water.'?

A. 'Water palace.'
B. 'Extraordinary castle (house, palace).'
C. 'Tchudo-judo’s palace.'
D. 'Home of water-spirits.'

Answer: 'Home of water-spirits.'