Complex sentence: In 2004, the race was supposed to be moved back to Yonkers Raceway, however, due to construction at the track, the race was moved to Harrington Raceway in Delaware, where the event was held in 2004 and' 05.
Split into simpler sentences: In 2004, the race was supposed to be moved back to Yonkers Raceway. However, due to construction at the track, the race was moved to Harrington Raceway in Delaware, where the event was held in 2004 and' 05.