. . . . . . . . "The impression from reading the paper is that the payment of crowd workers is extremely low (e.g., 0.04USD for 5 triples or 0.06USD for 30 triples). It would be interesting to report the hourly rate by considering the time spent by workers in completing the tasks to get a better idea of the adopted payment level." . "3"^^ . . . . "2019-11-26T09:05:11+01:00"^^ . .