{"id":"S2004002548","label":"Merrimack River Dam (Mass.)","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2004002548","normalized_label":"merrimack river dam (mass.)","broader":["http://id.loc.gov/authorities/subjects/sh85035604"],"aliases":["Great Stone Dam (Mass.)","Lawrence Dam (Mass.)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2004002548","provider":"lcsh","revision":"3870a043e61dc007","taxonomy_revision":"f050b5d4780b1289","title":"Merrimack River Dam (Mass.)","url":"/topics/S2004002548","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14702071637407588934","address_version":"morton4x16-v1","coordinates":[0,477,51867,53248],"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}