{"id":"S85129552","label":"Substitution reactions","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85129552","normalized_label":"substitution reactions","broader":["http://id.loc.gov/authorities/subjects/sh85022952"],"aliases":["Displacement reactions","Replacement reactions"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85129552","provider":"lcsh","revision":"09329ab776ef5083","taxonomy_revision":"f050b5d4780b1289","title":"Substitution reactions","url":"/topics/S85129552","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"864761790402266628","address_version":"morton4x16-v1","coordinates":[0,20,19429,16384],"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}