{"id":"S85067335","label":"Spark ignition engines--Alternative fuels","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85067335","normalized_label":"spark ignition engines--alternative fuels","broader":["http://id.loc.gov/authorities/subjects/sh85087580","http://id.loc.gov/authorities/subjects/sh85131661","http://id.loc.gov/authorities/subjects/sh93004617"],"aliases":["Alternate fuels for spark ignition engines","Alternative fuels for spark ignition engines"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85067335","provider":"lcsh","revision":"0e432bf36eda5846","taxonomy_revision":"f050b5d4780b1289","title":"Spark ignition engines--Alternative fuels","url":"/topics/S85067335","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"290702078291362308","address_version":"morton4x16-v1","coordinates":[0,20,18457,7168],"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}