{"id":"S85100035","label":"Perpetual motion","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85100035","normalized_label":"perpetual motion","broader":["http://id.loc.gov/authorities/subjects/sh85082767","http://id.loc.gov/authorities/subjects/sh85087557"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85100035","provider":"lcsh","revision":"1eff68e45d39e5b3","taxonomy_revision":"f050b5d4780b1289","title":"Perpetual motion","url":"/topics/S85100035","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"288450553355584000","address_version":"morton4x16-v1","coordinates":[0,20,18968,3072],"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}