{"id":"S85067319","label":"Internal combustion engines--Cylinder heads","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85067319","normalized_label":"internal combustion engines--cylinder heads","broader":["http://id.loc.gov/authorities/subjects/sh85035129"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85067319","provider":"lcsh","revision":"3224cc34e69c8db4","taxonomy_revision":"f050b5d4780b1289","title":"Internal combustion engines--Cylinder heads","url":"/topics/S85067319","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10090534867449561600","address_version":"morton4x16-v1","coordinates":[0,20,18456,56320],"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}