{"id":"S85110568","label":"Radio relay systems","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85110568","normalized_label":"radio relay systems","broader":["http://id.loc.gov/authorities/subjects/sh85110448","http://id.loc.gov/authorities/subjects/sh85110575"],"aliases":["Microwave relay systems","Relay broadcast stations","Relay transmitters","Repeater stations"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85110568","provider":"lcsh","revision":"b4e87965c71cca72","taxonomy_revision":"f050b5d4780b1289","title":"Radio relay systems","url":"/topics/S85110568","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9547701854725883392","address_version":"morton4x16-v1","coordinates":[0,20,19132,40960],"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}