{"id":"S2008112274","label":"Steam-engines--History","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2008112274","normalized_label":"steam-engines--history","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2008112274","provider":"lcsh","revision":"651be5681e210105","taxonomy_revision":"f050b5d4780b1289","title":"Steam-engines--History","url":"/topics/S2008112274","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"5476522308829323872","address_version":"morton4x16-v1","coordinates":[0,478,50546,18432],"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}