{"id":"S2009001190","label":"Shotcrete-lined tunnels","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2009001190","normalized_label":"shotcrete-lined tunnels","broader":["http://id.loc.gov/authorities/subjects/sh85030704","http://id.loc.gov/authorities/subjects/sh85138674"],"aliases":["SCL tunnels","Sprayed-concrete-lined tunnels"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2009001190","provider":"lcsh","revision":"a848a012374aa749","taxonomy_revision":"f050b5d4780b1289","title":"Shotcrete-lined tunnels","url":"/topics/S2009001190","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14144891938192892516","address_version":"morton4x16-v1","coordinates":[0,478,64435,38912],"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}