{"id":"S85018842","label":"Perpetual calendars","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85018842","normalized_label":"perpetual calendars","broader":["http://id.loc.gov/authorities/subjects/sh85018851"],"aliases":["Calendar, Perpetual","Perpetual almanacs"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85018842","provider":"lcsh","revision":"f7e187a5007716b3","taxonomy_revision":"f050b5d4780b1289","title":"Perpetual calendars","url":"/topics/S85018842","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"900865078193160772","address_version":"morton4x16-v1","coordinates":[0,20,17699,26624],"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}