{"id":"S85106225","label":"Precipitation hardening","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85106225","normalized_label":"precipitation hardening","broader":["http://id.loc.gov/authorities/subjects/sh85058886","http://id.loc.gov/authorities/subjects/sh85084204","http://id.loc.gov/authorities/subjects/sh85084205","http://id.loc.gov/authorities/subjects/sh85128673"],"aliases":["Age hardening"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85106225","provider":"lcsh","revision":"e7c013afb5f3c147","taxonomy_revision":"f050b5d4780b1289","title":"Precipitation hardening","url":"/topics/S85106225","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10088142605096731136","address_version":"morton4x16-v1","coordinates":[0,20,19064,50176],"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}