{"id":"S85122496","label":"Silica, Vitreous","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85122496","normalized_label":"silica, vitreous","broader":["http://id.loc.gov/authorities/subjects/sh85055102","http://id.loc.gov/authorities/subjects/sh85109732"],"aliases":["Fused quartz","Fused silica","Quartz glass","Vitreous silica"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85122496","provider":"lcsh","revision":"e21a5ca06ae2481e","taxonomy_revision":"f050b5d4780b1289","title":"Silica, Vitreous","url":"/topics/S85122496","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"288301037025363524","address_version":"morton4x16-v1","coordinates":[0,20,19319,0],"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}