<s>[INST] <<SYS>>
You are a helpful, respectful and honest assistant. Always answer as helpfully as possible, while being safe.  Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature.
If a question does not make any sense, or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
<</SYS>>

Extract from the following context the minimal span word for word that best answers the question. Think step by step and explain your reasoning. Then give the answer in JSON format as follows:
```json
{
  "answer": ...
}
```
If the answer is not in the context, the answer should be "?".
Question: ما هي الطيور التي أعادوا إدخالها إلى الولايات المتحدة ؟
Context: وقد أمكن تعليم طريق هجرة لقطيع من الطيور ، على سبيل المثال في مخططات إعادة الإدخال . بعد تجربة مع الأوز الكندي Branta canadensis ، تم استخدام الطائرات الخفيفة في الولايات المتحدة لتعليم طرق الهجرة الآمنة لإعادة إدخال الرافعات الديكية Grus americana . [/INST] ```json
{<answer_start>
  "answer": "رافعات الديكي"
  <answer_end>
}
``` </s>
وقد أمكن تعليم طريق هجرة لقطيع من الطيور ، على سبيل المثال في مخططات إعادة الإدخال . بعد تجربة مع الأوز الكندي Branta canadensis ، تم استخدام الطائرات الخفيفة في الولايات المتحدة لتعليم طرق الهجرة الآمنة لإعادة إدخال الرافعات الديكية Grus americana .
ما هي الطيور التي أعادوا إدخالها إلى الولايات المتحدة ؟
{'answer_start': [217], 'text': ['رافعات الديكي']}