Question: The 1965 Memorial Cup final was the 47th junior ice hockey championship of the Canadian Amateur Hockey Association, the George Richardson Memorial Trophy champions is which organization, that were two junior ice hockey franchises, that played in the top tier in the Ontario Hockey Association?
Sentence (from "1965 Memorial Cup"): In a best-of-seven series, held at Edmonton Gardens in Edmonton, Alberta, Niagara Falls won their 1st Memorial Cup, defeating Edmonton 4 games to 1.
Relevant evidence: No