Complex sentence: Owned and bred by Sheikh Mohammed's Godolphin Racing, he was by the dual Group One (G1) winner, Machiavellian, a son of Mr. Prospector, his dam, Helen Street (dam of nine winners), by multiple Group 1 winner, Troy.
Split into simpler sentences: Owned and bred by Sheikh Mohammed's Godolphin Racing, he was by the dual Group One (G1) winner Machiavellian, a son of Mr. Prospector. His dam, Helen Street (dam of nine winners) was by multiple Group 1 winner, Troy.