{"id":"S2004001929","label":"Concrete culverts","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2004001929","normalized_label":"concrete culverts","broader":["http://id.loc.gov/authorities/subjects/sh2004004526","http://id.loc.gov/authorities/subjects/sh85034768"],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2004001929","provider":"lcsh","revision":"cddc25cf9320582d","taxonomy_revision":"f050b5d4780b1289","title":"Concrete culverts","url":"/topics/S2004001929","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"4936024641547674178","address_version":"morton4x16-v1","coordinates":[0,477,51858,9216],"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}