{"id":"S85138143","label":"Piggyback trailers","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85138143","normalized_label":"piggyback trailers","broader":["http://id.loc.gov/authorities/subjects/sh91004624"],"aliases":["Demountable truck trailers","Truck trailers, Demountable"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85138143","provider":"lcsh","revision":"317eeffa1adce3d1","taxonomy_revision":"f050b5d4780b1289","title":"Piggyback trailers","url":"/topics/S85138143","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"903196025731301956","address_version":"morton4x16-v1","coordinates":[0,20,19563,31744],"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}