CREATE TABLE table_34990 ("Date" CLOB, "Visitor" CLOB, "Score" CLOB, "Home" CLOB, "Leading scorer" CLOB, "Record" CLOB)

What's the date of the game that has the Bulls as a visiting team?
SELECT "Date" FROM table_34990 WHERE "Visitor" = 'bulls'
SELECT "Date" FROM "table_34990" WHERE "Visitor" = 'bulls'