{"id":"S2005008716","label":"Spark ignition engines--Exhaust gas","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2005008716","normalized_label":"spark ignition engines--exhaust gas","broader":["http://id.loc.gov/authorities/subjects/sh85028840"],"aliases":["Emissions, Spark ignition engine","Exhaust gas, Spark ignition engine","Spark ignition engine emissions","Spark ignition engine exhaust gas","Spark ignition engines--Emissions"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2005008716","provider":"lcsh","revision":"311d713c73b26220","taxonomy_revision":"f050b5d4780b1289","title":"Spark ignition engines--Exhaust gas","url":"/topics/S2005008716","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"38350974737327652","address_version":"morton4x16-v1","coordinates":[0,478,2053,12288],"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}