With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Colonial legislation discriminated against Africans on cultural grounds. Colonial legislation submitted Africans to forced labour, to pass laws and to segregation in schools. That most Africans were perceived to engage in "uncivilized behaviour" by the Portuguese created a low opinion of Africans as a group among Europeans. The Portuguese immigrant peasants in urban areas, who lacked formal schooling, were frequently in direct competition with Africans for jobs and demonstrated jealousies and racial prejudice.
text_B: Was educational superiority a factor in Portuguese prejudice against Africans?
NO.