While he was working for Thomas Farmer, he began to buy fruits and other goods and sell them himself. He faced insults and difficulties doing this; however, he was determined to continue making money, which he did. He wanted to obtain enough savings to buy his freedom, which Robert King had promised him he could do for the same amount that King had paid for him. When he had saved enough money, he bought his freedom from King and lived the rest of his life as a free man. Which sentence in the paragraph is structured differently than the others?