Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Name the total number of opponets venue for oklahoma

### Inputs:
table_name: table, columns: ['Missouri vs.', 'Overall Record', 'at Columbia', 'at Opponents Venue', 'at Neutral Site', 'Last 5 Meetings', 'Last 10 Meetings', 'Current Streak', 'During Time in Big 12']

### Response:
SELECT COUNT at Opponents Venue FROM table WHERE Missouri vs. = Oklahoma