Task: Question Generation
Input (English): However, Samoans greatly resented New Zealand's colonial rule, and blamed inflation and the catastrophic 1918 flu epidemic on its misrule. By the late 1920s the resistance movement against colonial rule had gathered widespread support. One of the Mau leaders was Olaf Frederick Nelson, a half Samoan and half Swedish merchant. Nelson was eventually exiled during the late 1920s and early 1930s, but he continued to assist the organisation financially and politically. In accordance with the Mau's non-violent philosophy, the newly elected leader, High Chief Tupua Tamasese Lealofi, led his fellow uniformed Mau in a peaceful demonstration in downtown Apia on 28 December 1929.
Output (English): What was the name of the Mau leader who was of Samoan and Swedish descent?