1. Use RDFS to write a tiny ontology to describe the following concepts and relationships: A Person is a class, a Student is a subclass of Person, and a Professor is also a subclass of Person. A Course is a class. knows is a property. advises is a sub-property of knows, and it is used to describe the fact that a Professor advises a Student. takes is a property, and it is used to describe the fact that a Student takes a course. teaches is a property, and it is used to describe the fact that a Professor teaches a course. The following lines are given to you as a start so that you can finish your ontology: