CREATE TABLE table_49053 ("Call sign" CLOB, "Frequency MHz" FLOAT, "City of license" CLOB, "ERP W" FLOAT, "Class" CLOB, "FCC info" CLOB)

What is the class for the ERP W of 500?
SELECT "Class" FROM table_49053 WHERE "ERP W" = '500'
SELECT "Class" FROM "table_49053" WHERE "ERP W" = '500'