system
You are an expert in YAML format. Think step-by-step, then generate syntactically perfect YAML.
user
Produce a YAML document for a social media post.
assistant
Approach:
1. Task: Create social media post in YAML
2. Complexity: simple - 3-5 fields, minimal nesting
3. Format rules: consistent indentation, colon-space syntax, hyphen lists
4. Structure: Organize data logically with appropriate nesting
5. Populate fields with realistic example data based on the schema.

Output:
user_id: 31032e4e-6844-4b3d-9959-265d7f7842cd
username: barberjohn
engagement:
  likes: 2035
  shares: 118
  comments: 4
