Hi Community. :) What is the Liquid code to clean ...

Hi Community. :) What is the Liquid code to clean up my custom fields? I can't to seem to find it. I have an integration with a chatbot, the chat bot does a tailored customer survey, the answers are being sent over to Convertkit to be able to segment my list automatically. Now as per the screenshot the bot puts the exact answer there and there is sadly no way to tell the bot to just put a single word or 2 there instead of the whole line.
So in the custom field "Interesse" it puts: "eine Sprache schneller lernen & länger behalten" which is really long, I'd rather want to have it say: "Sprache lernen"
What would be the liquid code to accomplish this clean up and how would you set it up in convertkit?

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