Firefox

I often open articles/wiki pages wanting to skim them for information, and sometimes Ctrl+F is not enough to quickly find what I'm looking for. I wish I could type in prompts like "What city did it happen in?" (or just "city"), or eg. "public response", and it would highlight the phrase/sentence/paragraph of the article that is the most relevant. I imagine it's probably possible with LLMs today. Does anyone know if an extension like this exists yet? (if not for firefox then for chrome for the time being)