congress/scripts/preload-policies/policy-rules.json.sample

{
  "policies":
    [
      {
        "name": "sample_policy",
        "rules": [
                   {
                     "rule": "p(x):- q(x)",
                     "name": "rule1"
                   },
                   {
                     "rule": "q(1)"
                   },
                   {
                     "rule": "q('sample-row')"
                   },
                   {
                     "rule": "server_ids(x):- nova:servers(id=x)"
                   }
        ]
      }
   ]
}