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2008 telstra men's pro josh constable seb wilson grant thomas jackson close
what is the total number of times chelsea williams was the winner between 2007 and 2010 ?
WP VBD-AUX DT JJ NN IN NNS NNP NNP VBD-AUX DT NN IN CD CC CD .
2
select count ( * ) from w where c2 = 'chelsea wlliams'