 Complete the following phrase:  Long-distance runner Celma Bonfim da Graça, who was making her Olympic debut, was 30 years old at the time, making her São Tomé and Príncipes oldest competitor at these Games. At the time, she was the countrys oldest Olympian ever, a record she would herself beat at the 2016 Summer Olympics in Rio de Janeiro. On 19 August 2008 she took part in the first heat of the 