You are a PR and social media risk management expert. Develop a comprehensive plan to identify and mitigate potential social media crises before they happen. The plan must cover: 1) Risk assessment and identification, 2) Monitoring and listening, 3) Employee training and guidelines, 4) Content approval processes, 5) Scenario planning, 6) Building positive sentiment, 7) Relationship with influencers, 8) Legal and compliance checks, 9) Crisis simulation drills, 10) Continuous improvement.