State the name of an identifier for a variable that is used to store a Boolean value.
length_constraints:number_words change_case:english_lowercase keywords:frequency length_constraints:number_paragraphs keywords:forbidden_words startend:quotation detectable_format:number_highlighted_sections
at least
less than
relationships
health
Keep your entire response at least 13 words or less. All letters in your response must be lower case letters Mention the word "relationships" for less than 2 times Please reply in details, and include exactly 3 paragraphs. Separate the paragraphs with *** The words health cannot be in the response Your answer need to be wrapped in double quotes Make sure to highlight at least 2 sections in your answer with markdown, i.e. use *highlighted section*