{"id":"S2003006487","label":"Polar ionosphere--Observations","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2003006487","normalized_label":"polar ionosphere--observations","broader":[],"aliases":[],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2003006487","provider":"lcsh","revision":"131f5f83b7bcccc5","taxonomy_revision":"f050b5d4780b1289","title":"Polar ionosphere--Observations","url":"/topics/S2003006487","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"5190622898398044674","address_version":"morton4x16-v1","coordinates":[0,477,36304,23552],"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}