Python 3 Program - Write a program that asks the user to enter their name. Then ask the user to type a sentence with their name in it. Replace every instance of the users name with President Grover Cleveland and print the updated string. Check to see if the string starts with the word President and return true if yes or false if not print a statement indicating what you were checking and the result. Make the string all lowercase letters and print the final version of the string. Use the main function.