| http://www.w3.org/ns/prov#value | - My problem is that I am trying to get it to tell the user to enter in their input again if they do not enter a number like they are supposed to for case 1 or the square currently it will work if they enter only one letter such as a b or c but not if they enter more than one combined such as asdf and also it only prints out please try again once after just a single letter is entered than it will br
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