{"id":"S86002481","label":"Grumman X-29A (Research plane)","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh86002481","normalized_label":"grumman x-29a (research plane)","broader":["http://id.loc.gov/authorities/subjects/sh85057542","http://id.loc.gov/authorities/subjects/sh87004290"],"aliases":["FSW Demonstrator, Grumman Model 712 (Research plane)","Forward Swept Wing Demonstrator, Grumman Model 712 (Research plane)","Grumman Model 712 Forward Swept Wing Demonstrator (Research plane)","Grumman X-29A (Jet plane)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh86002481","provider":"lcsh","revision":"7960f58d258d5b7b","taxonomy_revision":"f050b5d4780b1289","title":"Grumman X-29A (Research plane)","url":"/topics/S86002481","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14411527620862821888","address_version":"morton4x16-v1","coordinates":[0,20,33068,50176],"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}