{"id":"S85067339","label":"Spark ignition engines--Ignition","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85067339","normalized_label":"spark ignition engines--ignition","broader":[],"aliases":["Ignition devices"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85067339","provider":"lcsh","revision":"4c520005b89f1441","taxonomy_revision":"f050b5d4780b1289","title":"Spark ignition engines--Ignition","url":"/topics/S85067339","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"324479075496641028","address_version":"morton4x16-v1","coordinates":[0,20,18457,11264],"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}