GrammarGrammarsemantic_operationEvery PAG keyword record, with what grounds it and how it is checked.DISCOVER_RESOURCESREAD_RESOURCESEARCH_CONTENTANALYZE_CONTENTEXTRACT_FACTSCALCULATE_METRICCOMPOSE_ARTIFACTVALIDATE_ARTIFACTPERSIST_ARTIFACTEXECUTE_TOOLREQUEST_DECISIONREPORT_RESULT