Input (grade 12): The first year Lightning Bar stood as a breeding stallion his stud fee, the amount charged to breed a mare to him, was $250 (approximately $as of) but only nine mares were bred to him.
Output (grade 4): The first year Lightning Bar stood as a breeding stallion, his stud fee, or the fee charged to breed a mare to him, was $250 ($as of). Only nine mares were bred to him.