what's that thing they invented for the developing world where you put it on a dirty lake and the sun rays evaporate the water and it goes up and into a container and it's clean
keywords:frequency length_constraints:number_words detectable_format:number_highlighted_sections startend:quotation keywords:forbidden_words change_case:english_lowercase length_constraints:number_paragraphs
less than
relationships
at least
health
Mention the word "relationships" for less than 2 times Keep your entire response at least 13 words or less. Make sure to highlight at least 2 sections in your answer with markdown, i.e. use *highlighted section* Your answer need to be wrapped in double quotes The words health cannot be in the response All letters in your response must be lower case letters Please reply in details, and include exactly 3 paragraphs. Separate the paragraphs with ***