Add HEAD-QA: A Healthcare Dataset for Complex Reasoning
CONTRIBUTOR
Thank you for your review @lhoestq, I've changed the types of `qid` and `ra` and now they are integers as `aid`.

Ready for another review!
2020-12-17T13:34:21Z
https://github.com/huggingface/datasets/pull/1455#issuecomment-747441893
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2020-12-17T13:34:21Z
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HEAD-QA is a multi-choice HEAlthcare Dataset, the questions come from exams to access a specialized position in the
Spanish healthcare system.