Complex sentence: Polish skaters Helena Pilejczyk and Elwira Seroczyńska placed second and third in the 1,500 meter event, earning Poland's only medals of the Games and becoming just the second and third Poles ever to win Winter Olympic medals.
Split into simpler sentences: Polish skaters Helena Pilejczyk and Elwira Seroczyńska placed second and third in the 1,500 meter event, which were Poland's only medals of the Games. They were just the second and third Poles ever to win Winter Olympic medals.