. . . . "The results of the comparison of experts and turkers, as discussed in Section 5, indicate that (i) untrained crowdworkers are in fact able to spot certain quality issues with satisfactory precision; that (ii) experts per- form well locating two but not the third type of qual- ity issues given, and that lastly (iii) the two approaches reveal complementary strengths." . . . . "2019-11-10T12:34:11+01:00"^^ . .