1. [40 points] 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 .ACourse 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: your work continues from here Once you have finished your ontology, use the validator you have used in Assignment 1 to validate your work. Submit a screen copy to show your validation result. Again, here is the URL of the validator: http://wwww3.org/RDF/Validator/