{"id":"S85110474","label":"Radio frequency modulation","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85110474","normalized_label":"radio frequency modulation","broader":["http://id.loc.gov/authorities/subjects/sh85005044","http://id.loc.gov/authorities/subjects/sh85086466"],"aliases":["FM radio","Frequency modulation, Radio"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85110474","provider":"lcsh","revision":"bc6fc73870706419","taxonomy_revision":"f050b5d4780b1289","title":"Radio frequency modulation","url":"/topics/S85110474","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"324470555359461956","address_version":"morton4x16-v1","coordinates":[0,20,19131,10240],"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}