{"id":"S85002630","label":"Air ducts--Aerodynamics","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85002630","normalized_label":"air ducts--aerodynamics","broader":["http://id.loc.gov/authorities/subjects/sh85001295"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85002630","provider":"lcsh","revision":"efc2fee8fd77de81","taxonomy_revision":"f050b5d4780b1289","title":"Air ducts--Aerodynamics","url":"/topics/S85002630","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"290627311504590400","address_version":"morton4x16-v1","coordinates":[0,20,17446,6144],"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}