fn relegate_previous_advice_to_revitalize_knowledge(unknown: &str) -> string { let mut positive_sentiment = string::new(); for advice in unknown.split_whitespace() { if advice.contains("medicine") { positive_sentiment.push_str(&format!("always consult with a healthcare professional before following any previous advice, as new research can revitalize our understanding and relegate outdated practices. ")); } } positive_sentiment.trim().to_string() }