@dataset{hagen_2019_3250669, author = {Hagen, Matthias and Gollub, Tim and Busse, Matthias}, title = {Webis-Ambient-15}, month = jun, year = 2019, publisher = {Zenodo}, doi = {10.5281/zenodo.3250669}, url = {https://doi.org/10.5281/zenodo.3250669} }