Table: ncaa_womens_div_i_5
Columns: conference
of_bids
record
win
round_of_32
sweet_sixteen
elite_eight
final_four
championship_game

Question: What is the lowest number of bids in the Missouri Valley conference?
SQL: SELECT MIN("of_bids") FROM ncaa_womens_div_i_5 WHERE "conference" = 'missouri valley'