In the code below, there is a function called isItUseful. It will be passed some different variations of a string, including those shown below:
'RegExp is very useful!'
'RegExp is very useful.'Pay attention to the final characters — each string ends with a different punctuation mark.
Your task is to create a pattern that matches this string, regardless of the punctuation mark at the end.
You don't need to call the function; just return the result.
