{"id":"S85040719","label":"Echo sounding","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85040719","normalized_label":"echo sounding","broader":["http://id.loc.gov/authorities/subjects/sh85125409"],"aliases":["Echo sounders","Sonic sounding"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85040719","provider":"lcsh","revision":"04bfe8d6f4d62771","taxonomy_revision":"f050b5d4780b1289","title":"Echo sounding","url":"/topics/S85040719","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"326665179561869828","address_version":"morton4x16-v1","coordinates":[0,20,18041,15360],"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}