{"id":"S2002004442","label":"Lead chalcogenides","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2002004442","normalized_label":"lead chalcogenides","broader":["http://id.loc.gov/authorities/subjects/sh85075452","http://id.loc.gov/authorities/subjects/sh95007250"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2002004442","provider":"lcsh","revision":"851e25a93788caa6","taxonomy_revision":"f050b5d4780b1289","title":"Lead chalcogenides","url":"/topics/S2002004442","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"901986573107734086","address_version":"morton4x16-v1","coordinates":[0,477,20647,26624],"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}