{"id":"S85100419","label":"Petroleum chemicals","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85100419","normalized_label":"petroleum chemicals","broader":["http://id.loc.gov/authorities/subjects/sh85100445"],"aliases":["Petrochemicals"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85100419","provider":"lcsh","revision":"cec58ffd77fc3586","taxonomy_revision":"f050b5d4780b1289","title":"Petroleum chemicals","url":"/topics/S85100419","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"288450553355585088","address_version":"morton4x16-v1","coordinates":[0,20,18974,3072],"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}