CREATE TABLE table_45421 ("Game" CLOB, "Date" CLOB, "Home team" CLOB, "Result" CLOB, "Road team" CLOB)

On what date did Portland play game 5 at home?
SELECT "Date" FROM table_45421 WHERE "Home team" = 'portland' AND "Game" = 'game 5'
SELECT "Date" FROM "table_45421" WHERE "Game" = 'game 5' AND "Home team" = 'portland'