{"id":"S2008004901","label":"Heck reaction","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2008004901","normalized_label":"heck reaction","broader":["http://id.loc.gov/authorities/subjects/sh85022952"],"aliases":["Mizoroki-Heck reaction"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2008004901","provider":"lcsh","revision":"59751f16400e0cbb","taxonomy_revision":"f050b5d4780b1289","title":"Heck reaction","url":"/topics/S2008004901","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"13856534001579337248","address_version":"morton4x16-v1","coordinates":[0,478,48868,37888],"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}