knowledge-base As a command 13 categories below knowledge-base Narrow by knowledge-organization-system 4 computational-ontology 3 knowledge-graph 3 document 1 technical-standard 1 web-site 1 web-standard 1 wiki 1 computational-ontology 3knowledge-graph 3commonsense-knowledge-basecycdbpediadomain-ontologydynamic-knowledge-graphfreebaseschema-orgtemporal-knowledge-graphupper-ontologywikidatayago