Question: What was the name of the severe dust storm that occurred on April 14, 1935 as part of the era known as the Dirty Thirties, which was partially caused by failure to apply the correct dryland farming methods along with a severe drought?
Sentence (from "2011 East Africa drought"): Many refugees from southern Somalia fled to neighboring Kenya and Ethiopia, where crowded, unsanitary conditions together with severe malnutrition led to a large number of deaths.
Relevant evidence: No