student_score/3 -store information concerning student e.g student_score(rose, logic_programming, 80).
course_belongs_to department/2 -indicating that a course units belongs to a department e,g course_belongs_to_department(csc2200,CS)
A student belongs to a department (student_belongs/2 ) if someone is a student and takes a course that belongs to the department. b. A someone is a member of a department (member_of_department/2) if someone is a lecturer and teaches a course that belongs to that department. c. get_student_grade/3 which assign a grade to a score in some course unit based on the following conditions If score is greater equal 80