{"id":"S85014917","label":"Block trading","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85014917","normalized_label":"block trading","broader":["http://id.loc.gov/authorities/subjects/sh85128226"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85014917","provider":"lcsh","revision":"451c37b29ba11ca3","taxonomy_revision":"f050b5d4780b1289","title":"Block trading","url":"/topics/S85014917","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"290495371250107968","address_version":"morton4x16-v1","coordinates":[0,20,17638,5120],"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}