{"id":"S85051935","label":"Frequency standards","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85051935","normalized_label":"frequency standards","broader":["http://id.loc.gov/authorities/subjects/sh85127315"],"aliases":["Standard frequencies"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85051935","provider":"lcsh","revision":"753cf5b59ce24d9d","taxonomy_revision":"f050b5d4780b1289","title":"Frequency standards","url":"/topics/S85051935","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"903125948977791488","address_version":"morton4x16-v1","coordinates":[0,20,18216,31744],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}