```python
from transformers import BigBirdForQuestionAnswering

epoch_0 = "4daa96c5befa9b728c47a77280ef9484377d7791"
revision = epoch_0

model = BigBirdForQuestionAnswering.from_pretrained(model_id, revision=revision)
tokenizer = BigBirdTokenizer.from_pretrained(model_id, revision=revision)
```