{"id":"S2025000387","label":"Blockhouses (Fortification)","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2025000387","normalized_label":"blockhouses (fortification)","broader":["http://id.loc.gov/authorities/subjects/sh85050919"],"aliases":["Block houses (Fortification)","Houses, Block (Fortification)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2025000387","provider":"lcsh","revision":"b7fbbda4e979c3fd","taxonomy_revision":"f050b5d4780b1289","title":"Blockhouses (Fortification)","url":"/topics/S2025000387","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"4900140704118080612","address_version":"morton4x16-v1","coordinates":[0,482,52279,3072],"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}