{"id":"S85063978","label":"Icebreakers (Ships)","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85063978","normalized_label":"icebreakers (ships)","broader":["http://id.loc.gov/authorities/subjects/sh85056111","http://id.loc.gov/authorities/subjects/sh85121591"],"aliases":["Ice-breakers (Ships)","Ice-breaking vessels","Icebreaking boats","Icebreaking ships","Icebreaking vessels"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85063978","provider":"lcsh","revision":"d639cfaff3cfe1f7","taxonomy_revision":"f050b5d4780b1289","title":"Icebreakers (Ships)","url":"/topics/S85063978","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9547776638763271680","address_version":"morton4x16-v1","coordinates":[0,20,18404,43008],"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}