TORONTO, May 18 (Reuters) - Canada's main stock index
retreated on Wednesday as mining and energy stocks fell,
pressured by lower commodity prices after the U.S. Federal
Reserve signaled it could raise interest rates next month.
The Toronto Stock Exchange's S&P/TSX composite index
.GSPTSE unofficially closed down 91.09 points, or 0.65
percent, at 13,826.01. Five of the index's 10 main groups ended
lower.