文本1：'The broader Standard & Poor's 500 Index <.SPX> was 0.46 points lower, or 0.05 percent, at 997.02.'，文本2：'The technology-laced Nasdaq Composite Index .IXIC was up 7.42 points, or 0.45 percent, at 1,653.44.
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两个文本的语义：不相同