CREATE TABLE table_name_7 (_number_of_bids INT, win__percentage VARCHAR, conference VARCHAR)

How many bids were there for the .500 win percentage in the Ohio Valley conference?
SELECT SUM(_number_of_bids) FROM table_name_7 WHERE win__percentage = ".500" AND conference = "ohio valley"
SELECT SUM("_number_of_bids") FROM "table_name_7" WHERE ".500" = "win__percentage" AND "conference" = "ohio valley"