{"id":"S89002467","label":"Concrete--Chemical resistance","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh89002467","normalized_label":"concrete--chemical resistance","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh89002467","provider":"lcsh","revision":"7f29f98db8d0ede4","taxonomy_revision":"f050b5d4780b1289","title":"Concrete--Chemical resistance","url":"/topics/S89002467","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9242732237663897158","address_version":"morton4x16-v1","coordinates":[0,21,14407,35840],"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}