- Your response should contain at least 4 sentences.
- Include keywords [air, fire, water, earth] in the response.
- In your response, the word [element] should appear at least 3 times.
- Your entire response should be in English, and in all lowercase letters. no capital letters are allowed.
- At the end of your response, please explicitly add a postscript starting with [p.s.]
- Finish your response with this exact phrase [stay curious!]. no other words should follow this phrase.

user