{"id":"S2002011480","label":"Pollution control devices","description":"Use as a topical subdivision under individual land vehicles and types of land vehicles.","source_url":"https://id.loc.gov/authorities/subjects/sh2002011480","normalized_label":"pollution control devices","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2002011480","provider":"lcsh","revision":"999798b48e0ac51c","taxonomy_revision":"f050b5d4780b1289","title":"Pollution control devices","url":"/topics/S2002011480","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"901845851721573894","address_version":"morton4x16-v1","coordinates":[0,477,20757,24576],"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}