class Chair():
    def __init__(self):
         print("Constructor");
    def no_of_legs(self):
        print("no_of_legs")
    def sit(self):
        print("sit");
class Table:
    def write(self):
        print("Write")
class Workstation:
    def notfolding(self):
        print("Not folding")
        a=Chair()
        a.no_of_legs()
        b=Table()
        b.write()
            
