Complex sentence: Ironically, Hans Ruesch had never seen an Eskimo, but based his story on the Oscar-winning film "Eskimo" (1933), directed by W.S. van Dyke.
Split into simpler sentences: Ironically, Hans Ruesch had never seen an Eskimo. He based his story on the Oscar-winning film "Eskimo" (1933), directed by W.S. van Dyke.