def get_owner_email_from_domain(domain):
    """Look up the owner email address for a given domain.

    Returning dummy addresses here - implement your own domain->email lookup here.
    Returns:
        str: email address
    """
    email = {
        'example-domain-a.example.com': 'owner-a@example.com',
        'example-domain-b.example.com': 'owner-b@example.com',
    }.get(domain, 'example-resource-owner@example.com')
    return email