A very important step in conducting research is reviewing existing literature. This allows to develop novel ideas, identify current gaps and eventually produce impactful research. However, the number of publications grows rapidly and is far too big for humans to study in detail. In order to overcome this challenge, innovative tools that allow to automate part of the literature review process have to be developed. One such technology is QA, where the answer to a question is automatically produced based on scientific background knowledge. This task is challenging due to scarce data, complex nature of the questions and underlying texts, and long documents.