Converting unicode text to ascii?

I have a table of world cities (Thanks Chris for helping with the csv upload!). I need to concatenate a few fields together to make a lookup key so that I can capture data from a webhook.

The problem is the world cities province field is not ascii characters, rather it is unicode. Is there a way to convert unicode to plain ascii characters using filters? Or do I need to explore lamdas to do so?

Thanks in advance!
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