Instruct assistant to split text into 2

This is the response I get from OpenAI Assistant API that I’ve created.
I’m building a translator.
I want to save original answer in a different field and the translation in the other one. How can I do this?

Ideally I’d instruct Assistant GPT to differentiate this 2 in separate JSON key/values but not sure it can do that.

I failed extracting separate texts using Regex patterns or splitting them by where \n\n is. Nothing seems to work… Can you point me into right direction?