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

### Instruction:
What is the low rebound total for players from Oklahoma before 1975?

### Inputs:
table_name: table, columns: ['Player', 'Pos.', 'From', 'School/Country', 'Rebs', 'Asts']

### Response:
SELECT MIN Rebs FROM table WHERE School/Country = oklahoma AND From < 1975