{"id":"S85108018","label":"Proving grounds, American","description":"Here are entered works on American proving grounds outside the United States. Works on proving grounds within the United States are entered under [Proving grounds] with local subdivision.","source_url":"https://id.loc.gov/authorities/subjects/sh85108018","normalized_label":"proving grounds, american","broader":[],"aliases":["American proving grounds"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85108018","provider":"lcsh","revision":"0be348e3615e7760","taxonomy_revision":"f050b5d4780b1289","title":"Proving grounds, American","url":"/topics/S85108018","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10088274547494487552","address_version":"morton4x16-v1","coordinates":[0,20,19092,51200],"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}