Complex sentence: Luge is one of the seven Olympic sports currently featured in the Winter Olympic Games program, and has been a constant presence since it was first introduced at the 1964 Winter Olympics in Innsbruck, Austria.
Split into simpler sentences: Luge is one of the seven Olympic sports currently contested at the Winter Olympic Games. It has been a constant presence in the Olympic program since its introduction at the 1964 Winter Olympics in Innsbruck, Austria.