GameQA: Gamified Mobile App Platform for Building Multiple-Domain Question-Answering Datasets. - Njall Skarphedinsson; Breki Gudmundsson; Steinar Smari; Marta Kristín Lárusdóttir; Hafsteinn Einarsson; Abuzar Khan; Eric Nyberg; Hrafn Loftsson (EACL (System Demonstrations), 2023)