{"id":"S2008008104","label":"Four-stroke cycle engines","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2008008104","normalized_label":"four-stroke cycle engines","broader":["http://id.loc.gov/authorities/subjects/sh85067314"],"aliases":["Engines, Four-stroke cycle","Four-cycle engines","Four-stroke engines"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2008008104","provider":"lcsh","revision":"652e00b49ecc2aa9","taxonomy_revision":"f050b5d4780b1289","title":"Four-stroke cycle engines","url":"/topics/S2008008104","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"13890302218726680160","address_version":"morton4x16-v1","coordinates":[0,478,48918,40960],"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}