jack and jill are gardners. Jill says to jack I will trade you ten of my magical corn beans that can grow 8 ears of corn per bean in less than 2 weeks for 10 of your jumbo tomatoes that will ripen in 2 weeks. Jacks agree and plants the beans. Two weeks later Jill demanded the tomatoes for Jack who has two ears of corn refuses to give Jill the tomatoes. Is there a contract and if so was it breached?