Task: Explanation
Input (English): Dana Trevor Murzyn (born December 9, 1966) is a Canadian former professional ice hockey defenceman. Drafted out of the Western Hockey League (WHL), he was selected fifth overall by the Hartford Whalers in the 1985 NHL Entry Draft. He began his NHL career in 1985–86 with the Whalers and was named to the NHL All-Rookie Team. After being traded to the Calgary Flames in 1988, he won the Stanley Cup with the club in 1989. He was traded a second time in 1991 to the Vancouver Canucks, where he spent the majority of his career. Murzyn retired following the 1998–99 season after fourteen years in the NHL. Question: Dana Trevor Murzyn began his NHL Career in a season that saw the introduction of which trophy ? Answer: the Presidents' Trophy
Output (English):  He began his NHL career in 1985–86 with the Whalers and was named to the NHL AllRookie Team.