@article{kwiatkowski2019natural, title={Natural questions: a benchmark for question answering research}, author={Kwiatkowski, Tom and Palomaki, Jennimaria and Redfield, Olivia and Collins, Michael and Parikh, Ankur and Alberti, Chris and Epstein, Danielle and Polosukhin, Illia and Devlin, Jacob and Lee, Kenton and others}, journal={Transactions of the Association for Computational Linguistics}, volume={7}, pages={453--466}, year={2019}, publisher={MIT Press One Rogers Street, Cambridge, MA 02142-1209, USA journals-info~…}}