Consider the RDF representation of information from the university schema as shown in Figure 8.3. Write the following queries in SPARQL.

a. Find the titles of all courses taken by any student named Zhang.

b. Find titles of all courses such that a student named Zhang takes a section of the course that is taught by an instructor named Srinivasan.

c. Find the attribute names and values of all attributes of the instructor named Srinivasan, without enumerating the attribute names in your query.

Figure 8.3

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10101 10101 10101 00128 00128 00128 instance-of name salary instance-of name tot_cred course_dept instance-of sec_course comp_sci instance-of department. comp_sci dept_name "Comp. Sci.". biology instance-of department. CS-101 instance-of course. CS-101 title "Intro. to Computer Science" CS-101 sec1 sec1 sec1 sec1 sec1 sec1 sec1 10101 00128 00128 10101 sec_id semester year classroom time_slot_id inst_dept stud_dept instructor. "Srinivasan". takes teaches "6500". student. "Zhang". "102". comp_sci. section. CS-101. "1". "Fall". "2017". packard-101. "H". comp_sci. comp_sci. sec1. sec1.