{"id":"S85137286","label":"Trenching machinery","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85137286","normalized_label":"trenching machinery","broader":["http://id.loc.gov/authorities/subjects/sh85046094"],"aliases":["Ditchers","Trench digging machines"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85137286","provider":"lcsh","revision":"aa4984a0fdaa23f5","taxonomy_revision":"f050b5d4780b1289","title":"Trenching machinery","url":"/topics/S85137286","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"290697680311961152","address_version":"morton4x16-v1","coordinates":[0,20,19550,6144],"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}