CREATE TABLE table_44968 ("Pollutant" CLOB, "Type" CLOB, "Standard" CLOB, "Averaging Time" CLOB, "Regulatory Citation" CLOB)

what is the polluntant when the regulatory citation is 40 cfr 50.7(a) and the type is primary?
SELECT "Pollutant" FROM table_44968 WHERE "Regulatory Citation" = '40 cfr 50.7(a)' AND "Type" = 'primary'
SELECT "Pollutant" FROM "table_44968" WHERE "Regulatory Citation" = '40 cfr 50.7(a)' AND "Type" = 'primary'