id: http://example.com

prefixes:
  xsd: http://www.w3.org/2001/XMLSchema#

types:
  string:
    uri: xsd:string
    base: str

classes:
    c1:
      slots:
        - id

    c2:
      is_a: c1
      slots:
        - s1

    c3:
      is_a: c1
      slots:
        - s2


slots:
    id:
      description: a identifier
      identifier: true

    s1:
      domain: c1

    s2:
      domain: c2

