 Complete the following phrase:  São Tomé and Príncipe participated at five Summer Olympic games from its debut in the 1996 Summer Olympics in Atlanta and its appearance at the 2012 Summer Olympics in London. The highest number of São Tomé and Príncipe athletes participating in a summer games is three in the 2008 games in Beijing, China. No São Tomé and Príncipe athlete has ever won a medal at the Olympics. Two track and field athletes from São Tomé and Príncipe were selected to compete in the London games: Christopher Lima da Costa in the 