Juan is an elderly man who lives with Sam.Juan is totally dependent on Sam's support.Sam, in his early 40s, tells Juan that unless he transfers a tract of land he owns to Sam, Sam will no longer support and take care of him.In fact, the tract of land is worth $40,000 and Juan is interested in selling the land for the fair market value.Sam offers $10,000 for the land.Juan agrees and signs the paperwork to have the land transferred to Sam.

Is there a valid contract between Juan and Sam?If there is a contract, can the contract be set aside for any reason? Explain.