Complex sentence: California Chrome is owned by Perry Martin of Yuba City, California and Steve Coburn of Topaz Lake, Nevada, who also own his dam, Love the Chase, and thus are his breeders.
Split into simpler sentences: California Chrome is owned by Perry Martin of Yuba City, California and Steve Coburn of Topaz Lake, Nevada. The two also own his dam, Love the Chase, and thus are his breeders.