{"id":"S85139588","label":"Underground nuclear explosions","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85139588","normalized_label":"underground nuclear explosions","broader":["http://id.loc.gov/authorities/subjects/sh85092976"],"aliases":["Atomic underground explosions","Nuclear underground explosions","Underground burst","Underground explosions (Nuclear)","Underground nuclear testing","Underground weapons testing"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85139588","provider":"lcsh","revision":"2a2fe9735f7d6d66","taxonomy_revision":"f050b5d4780b1289","title":"Underground nuclear explosions","url":"/topics/S85139588","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"290556943829959232","address_version":"morton4x16-v1","coordinates":[0,20,19586,4096],"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}