参考：
使用以下命令在 TFDS 中加载此数据集：
ds = tfds.load('huggingface:coqa')
- 说明：
CoQA: A Conversational Question Answering Challenge
- 许可：无已知许可
- 版本：1.0.0
- 拆分：
| 拆分 | 样本 |
|---|---|
'train' |
7199 |
'validation' |
500 |
- 特征：
{
"source": {
"dtype": "string",
"id": null,
"_type": "Value"
},
"story": {
"dtype": "string",
"id": null,
"_type": "Value"
},
"questions": {
"feature": {
"dtype": "string",
"id": null,
"_type": "Value"
},
"length": -1,
"id": null,
"_type": "Sequence"
},
"answers": {
"feature": {
"input_text": {
"dtype": "string",
"id": null,
"_type": "Value"
},
"answer_start": {
"dtype": "int32",
"id": null,
"_type": "Value"
},
"answer_end": {
"dtype": "int32",
"id": null,
"_type": "Value"
}
},
"length": -1,
"id": null,
"_type": "Sequence"
}
}