persons:
  - id: P:001
    name: fred bloggs
    age_in_years: 33
  - id: P:002
    name: joe schmoe
    has_employment_history:
      - employed_at: ROR:1
        started_at_time: 2019-01-01
        is_current: true
    has_familial_relationships:
      - related_to: P:001
        type: SIBLING_OF
    has_medical_history:
      - started_at_time: 2019-01-01
        in_location: GEO:1234
        diagnosis:
          id: CODE:D0001
          name: headache
          in_code_system: DiseaseCodes
        procedure:
          id: CODE:P0001
          name: trepanation
          in_code_system: ProcedureCodes
    addresses:
      - street: 1 foo street
        city: foo city
companies:
  - id: ROR:1
    name: foo
activities:
  - id: A:1
    started_at_time: 2019-01-01
    was_associated_with: Agent:987
code_systems:
  - id: DiseaseCodes
    name: disease codes
  - id: ProcedureCodes
    name: disease codes
