Complex sentence: The same seminar was repeated February 27th-28th, 2010 at Chapman University in Orange, CA, which was co-sponsored by the Asian Pacific Law Student Association and the Vietnamese American Law Student Association.
Split into simpler sentences: The same seminar was repeated February 27th-28th, 2010 at Chapman University in Orange, CA. The seminar was co-sponsored by the Asian Pacific Law Student Association and the Vietnamese American Law Student Association.