{"id":"S85004653","label":"Amplitude modulation","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85004653","normalized_label":"amplitude modulation","broader":["http://id.loc.gov/authorities/subjects/sh85086466"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85004653","provider":"lcsh","revision":"884953d86e00bed1","taxonomy_revision":"f050b5d4780b1289","title":"Amplitude modulation","url":"/topics/S85004653","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9549896204045911556","address_version":"morton4x16-v1","coordinates":[0,20,17477,46080],"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}