{"id":"S85038264","label":"Directional couplers","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85038264","normalized_label":"directional couplers","broader":["http://id.loc.gov/authorities/subjects/sh85145782"],"aliases":["Couplers, Directional"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85038264","provider":"lcsh","revision":"9f5669579a34cf1f","taxonomy_revision":"f050b5d4780b1289","title":"Directional couplers","url":"/topics/S85038264","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10124096635320795712","address_version":"morton4x16-v1","coordinates":[0,20,18002,57344],"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}