TORONTO, April 23 Canada's main stock index turned negative during a sharp slip in the last half hour of trade on Wednesday. The Toronto Stock Exchange's S&P/TSX composite index shed around 20 points in minutes, pushing it more than 8 points below its last close, to 14,547.56. Six of the 10 main groups were in negative territory. (Reporting by Alastair Sharp; Editing by Meredith Mazzilli)
More than half of the 10 main groups were in the negative territory.
( z1 be-located-at :ARG1 ( z2 group :quant ( z3 more-than :op "1/2" ) :ARG1-of ( z4 include :ARG2 ( z5 group :quant 10 :mod ( z6 main ) ) ) ) :ARG2 ( z7 territory :ARG0-of ( z8 negative ) ) )