Complex sentence: Before 2006 the race was known as the Silver Trophy Stakes, and when it was temporarily transferred to the all-weather track at Lingfield Park Racecourse in 2005, it became the first British Pattern race to be run on a non-turf course.
Split into simpler sentences: Before 2006 the race was known as the Silver Trophy Stakes. When it was temporarily transferred to the all-weather track at Lingfield in 2005, it became the first British Pattern race to be run on a non-turf course.