Write a program to tell whether a person is a Beatle. Here's the worksheet:
The user types a name in B1, and clicks the button. If the name if John, Paul, George, or Ringo, the program says that the person is a Beatle:
Otherwise, the program shows "Not a Beatle."
The program should work for upper- and lowercase characters, and when there are spaces before and/or after the name. For example, " jOHn " should be identified as a Beatle.
The usual coding standards apply.
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