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

Which of the following definitions best describes 'Uncle'?

A. Each member of this class has gender male and at least one aunt or one uncle.
B. The class of the concept is a subclass of single and designates all siblings.
C. Each member of this class has gender male and at least one nephew or one niece.
D. Each member of this class has gender female and at least one aunt or one uncle.

Answer: Each member of this class has gender male and at least one nephew or one niece.