CREATE TABLE table_50344 ("Callsign" CLOB, "Area served" CLOB, "Band" CLOB, "Freq currently" CLOB, "Purpose" CLOB)

What is the Community Band with a 4BCB Callsign?
SELECT "Band" FROM table_50344 WHERE "Purpose" = 'community' AND "Callsign" = '4bcb'
SELECT "Band" FROM "table_50344" WHERE "Callsign" = '4bcb' AND "Purpose" = 'community'