user: Question: Who are the opponents of Missouri that have an overall record of MU, 3-1?
Columns: ['Missouri vs.', 'Overall Record', 'at Columbia', 'at Opponents Venue', 'at Neutral Site', 'Last 5 Meetings', 'Last 10 Meetings', 'Current Streak', 'Since Joining SEC']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Alabama', 'UA, 4-2', 'Tied, 1-1', 'UA, 1-0', 'UA, 2-1', 'UA, 3-2', 'UA, 4-2', 'W 2', 'MU, 1-0']
SQL:

assistant: SELECT "Missouri vs." FROM "Table" WHERE "Overall Record" = 'MU, 3-1';