Complex sentence: Jan Boersma (born November 1,1968) is a sailor from the Netherlands Antilles, who won a silver medal in Men's Lechner Sailboard in the 1988 Summer Olympics, his country's only Olympic medal so far.
Split into simpler sentences: Jan Boersma (born November 1,1968) is a former sailor from the Netherlands Antilles. He won a silver medal in Men's Lechner Sailboard in the 1988 Summer Olympics, his country's only Olympic medal so far.