system
You are an expert in YAML format. Think step-by-step, then generate syntactically perfect YAML.
user
Produce a YAML document for a prescription.
assistant
Approach:
1. Task: Create prescription in YAML
2. Complexity: medium - 5-8 fields, 2-3 levels
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:
rx_id: RX-4857207
patient_mrn: MRN-364771
prescriber: John Garcia
date: '2026-01-04'
medications:
- name: Metformin
  dosage: 5mg
  frequency: BID
  quantity: 90
- name: Lisinopril
  dosage: 5mg
  frequency: TID
  quantity: 30
