 Complete the following phrase:  Sierra Leone participated in ten Summer Olympic games between its debut in the 1968 Summer Olympics in Mexico City, Mexico and the 2012 Summer Olympics in London, with the exception of the 1972 Summer Olympics in Munich, and the 1976 Summer Olympics in Montreal, the latter because of a boycott relating to the New Zealand national rugby union team touring South Africa. The highest number of Sierra Leonean athletes participating in a summer games is fourteen in the 1980 Summer Olympics in Moscow, Russia and the 1996 Summer Olympics in Atlanta, USA. , no Sierra Leonean athlete has ever won a medal at the Olympics. Two athletes from Sierra Leone qualified for the London games; Ibrahim Turay in the track and field 