|Provide information about the student named Shankar in our sample university
database, including information from the student tuple corresponding to
Shankar, the takes tuples corresponding to Shankar and the course tuples corresponding
to these takes tuples, in each of the following representations:
a. Using JSON, with an appropriate nested representation.
b. Using XML, with the same nested representation.
c. Using RDF triples.
d. As an RDF graph.