Mezue ahịrịokwu na-esonụ:
Ndị German na-arụ ọrụ na Poland (Agha Ụwa nke Abụọ), na Nọvemba 1939, ndị German gburu ọtụtụ ndị Poland si Gręblin n'oge nnukwu mgbuchapụ emere na Szpęgawski Forest dị ka akụkụ nke "Intelligenzaktion".