CREATE TABLE table_69635 ("Call sign" CLOB, "Frequency MHz" FLOAT, "City of license" CLOB, "ERP W" FLOAT, "Class" CLOB, "FCC info" CLOB)

What call sign has a frequency of 91.3 MHz?
SELECT "Call sign" FROM table_69635 WHERE "Frequency MHz" = '91.3'
SELECT "Call sign" FROM "table_69635" WHERE "Frequency MHz" = '91.3'