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TOKYO STOCKS RISE: Prices edged up today on the Tokyo Stock Exchange,but a key index was unable to stay above the 15,000-point level.The 225-issue Nikkei Stock Average rose 109.30 points to close at14,929.55 after afternoon profit-taking narrowed earlier gains ofnearly 220 points. S. KOREA INCENTIVES: The South Korean government today decided tooffer tax, financial and other support to local companies that investin North America. The incentives are designed to head off new tradebarriers. The decision follows last week's agreement among theUnited States, Canada and Mexico to establish a common trade pactwith reduced tariffs and other trade barriers. South Koreanofficials and …