George Hislop, Brent E. Daum, Albert McNutt, Eric Brogaard and Gail Meredith Plaintiffs (respondents) and the Attorney General of Canada, Defendant (appellant) and the Attorney General of Ontario, Intervener on Appeal from the Judgment of Justice Ellen M. Macdonald of the Superior Court of Justice Dated December 19, 2003, 234 D.L.R. (4th) 465