{"id":"S85142089","label":"Variable speed drives","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85142089","normalized_label":"variable speed drives","broader":["http://id.loc.gov/authorities/subjects/sh85106016"],"aliases":["Adjustable speed drives","Drives, Variable speed"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85142089","provider":"lcsh","revision":"29bdde57842a71c9","taxonomy_revision":"f050b5d4780b1289","title":"Variable speed drives","url":"/topics/S85142089","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"324342737132470788","address_version":"morton4x16-v1","coordinates":[0,20,19625,9216],"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}