 Complete the following phrase:  Among the nations medalists were swimmers Missy Franklin, Allison Schmitt and Ryan Lochte, who each won a total of five medals. Swimmer Nathan Adrian and platform diver David Boudia won gold medals in their respective individual events after 24-year-long non-successes. Meanwhile, tennis player Serena Williams followed her sisters success by winning the gold medal in the womens tennis singles event. Gymnast Gabby Douglas became the fourth U.S. female to win a gold medal in the 