{"id":"S92002067","label":"Blocking sets","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh92002067","normalized_label":"blocking sets","broader":["http://id.loc.gov/authorities/subjects/sh85048353"],"aliases":["Blocking coalitions (Mathematics)","Coalitions, Blocking (Mathematics)","Sets, Blocking"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh92002067","provider":"lcsh","revision":"34423a937d71b111","taxonomy_revision":"f050b5d4780b1289","title":"Blocking sets","url":"/topics/S92002067","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"5494616137889367554","address_version":"morton4x16-v1","coordinates":[0,21,61276,19456],"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}