PARIS – France’s Cassandre Beaugrand won the Olympic women’s triathlon on Wednesday after the event finally went ahead in a huge relief for organisers.Problems with the River Seine’s water quality had marred the run-up to the competition.Organisers were forced to cancel training this week in the river and postponed the men’s race on Tuesday after the Seine was found to be too dirty for athletes following rainstorms last week.But despite heavy rain overnight, which can stir up pollution, organisers said early on Wednesday the water levels had been “assessed as compliant” for the women’s…