You need to keep record of under- graduate, PhD students, faculty and staffs of your institute. Write an abstract class Person with the following attributes and method 1. Attribute Name: String 2. Attribute Address: String 3. Method Get_info() returns information of the person Extend class Person to Student, Student to Grad_student & PhD _student. Student has a roll no field, Grad_student has a course list field and PhD _student has a research field. Extend class Person to Employee, Employee to Faculty and Staff. Employee has Empno field and Faculty has a coursetaken field and staff has incharge field. Write constructor for all the classes, and override method Get_info() for all the classes. Create a TA class which is derived from PhD_ student and Faculty class.
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