Complex sentence: Hoping to help hungry Oklahomans, Murray brought a team of mules to the mansion in order plow up a large portion of the lawn, which he did himself, converting the grounds into a vegetable garden where the poor were invited to plant vegetables.
Split into simpler sentences: Hoping to help hungry Oklahomans, Murray brought a team of mules to the mansion in order plow up a large portion of the lawn, which he personally did himself. Converting the grounds into a vegetable garden where the poor were invited to plant vegetables.