What is the tone of this passage from things fall apart "That year the harvest was sad, like a funeral, and many farmers wept as they dug up the miserable and rotting yams. One man tied his cloth to a tree branch and hanged himself. Okonkwo remembered that tragic year with a cold shiver throughout the rest of his life. It always surprised him when he thought of it later that he did not sink under the load of despair. He knew that he was a fierce fighter, but that year had been enough to break the heart of a lion."