{"id":"S85104599","label":"Polychlorinated biphenyls","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85104599","normalized_label":"polychlorinated biphenyls","broader":["http://id.loc.gov/authorities/subjects/sh85014271","http://id.loc.gov/authorities/subjects/sh85095542"],"aliases":["PCBs","Polychlorobiphenyls"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85104599","provider":"lcsh","revision":"a15afaebf15e8dd3","taxonomy_revision":"f050b5d4780b1289","title":"Polychlorinated biphenyls","url":"/topics/S85104599","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"867163105539802692","address_version":"morton4x16-v1","coordinates":[0,20,19039,23552],"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}