Complex sentence: The Canadian Open was held at Niakwa in 1961, the RCGA Men's Amateur Championship in 1974 and the Canadian Ladies' Amateur Championship in 1956,1972, and 2001.
Split into simpler sentences: The Canadian Open was held at Niakwa in 1961. Niakwa hosted the RCGA Men's Amateur Championship in 1974, and the Canadian Ladies' Amateur Championship in 1956,1972, and 2001.