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

Which of the following definitions best describes 'Stepfather'?

A. The class of the concept is a subclass of stepparent and of mother. Each member of this class has gender female and at least one stepchild.
B. is a subclass of brother. Each member of this class has gender male and at least one biological sibling.
C. The class of the concept is a subclass of stepparent and of father. Each member of this class has gender male and at least one stepchild.
D. is a subclass of biological parent and of father. This class designates all biological fathers. Each member of this class has gender male and at least one biological child.

Answer: The class of the concept is a subclass of stepparent and of father. Each member of this class has gender male and at least one stepchild.