Question: How many seasons did the namesake of the River East Royal Knights' home stadium play?
Sentence (from "Terry Sawchuk"): Terrance Gordon Sawchuk (December 28, 1929 – May 31, 1970) was a Ukrainian-Canadian professional ice hockey goaltender who played 21 seasons in the National Hockey League (NHL) for the Detroit Red Wings, Boston Bruins, Toronto Maple Leafs, Los Angeles Kings and the New York Rangers.
Relevant evidence: Yes