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Sept 3 (Reuters) - Wall Street opened slightly higher as U.S. data indicated a strengthening economy and the European Central Bank pledged to beef up or prolong its stimulus program.
The Dow Jones industrial average rose 76.16 points, or 0.47 percent, to 16,427.54, the S&P 500 gained 8.1 points, or 0.42 percent, to 1,956.96 and the Nasdaq composite added 14.96 points, or 0.31 percent, to 4,764.94. (Reporting By Sudarshan Varadhan; Editing by Saumyadeb Chakrabarty)