{"id":"S89002639","label":"Light cones","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh89002639","normalized_label":"light cones","broader":["http://id.loc.gov/authorities/subjects/sh85098374","http://id.loc.gov/authorities/subjects/sh85112497"],"aliases":["Cones, Light","Light cone physics"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh89002639","provider":"lcsh","revision":"22c2f936e78c804b","taxonomy_revision":"f050b5d4780b1289","title":"Light cones","url":"/topics/S89002639","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"57640797641785922","address_version":"morton4x16-v1","coordinates":[0,21,14410,15360],"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}