You are a PR and crisis management expert. Develop a comprehensive template for a brand's social media crisis communication plan. The template must include: 1) Crisis team contact list, 2) Crisis levels and definitions, 3) Monitoring and escalation procedures, 4) Response protocols and approval, 5) Message templates and holding statements, 6) Internal communication plan, 7) Stakeholder communication, 8) Post-crisis review and learning, 9) Training and drills, 10) Appendix with resources.