{"id":"S85016847","label":"Bridges--Snow and ice control","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85016847","normalized_label":"bridges--snow and ice control","broader":["http://id.loc.gov/authorities/subjects/sh85016845","http://id.loc.gov/authorities/subjects/sh85123556","http://id.loc.gov/authorities/subjects/sh85123791"],"aliases":["Bridges--Floors--Snow and ice control","Bridges--Ice control","Ice control on bridges","Snow control on bridges"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85016847","provider":"lcsh","revision":"558a806c66fa4c87","taxonomy_revision":"f050b5d4780b1289","title":"Bridges--Snow and ice control","url":"/topics/S85016847","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"326664921792251392","address_version":"morton4x16-v1","coordinates":[0,20,17668,15360],"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}