RDF(S) construction of an ontology

Expected: Construct a mini ontology (vocabulary) RDF (S) dealing with the Olympic games and participants and define some instances of this ontology Your ontology had to answer questions like: Who are the members of the delegation of a country participating in the Olympic Games? What events did an athlete participate in? Which team won a particular event? What are the tests in a given sport? Requirements: Defining classes, properties, and instances Defining Class and Property Hierarchies Adequate use of subclasses and subpropertyof Definition of domain and range Separation classes / properties / instances Annotations RDFS (label, comment, ...) A use of the relevant vocabulary (ontology), such as FOAF and dbpedia for example would be appreciated Format of dataset: turtle A graphical representation showing the important parts would be appreciated Documentation according to your judgment Define a few instances