Every cat is on a mat. Every person has some person as mother. Some person is between a dog and a blue cat. If some person x is the mother of a person y, then y is a child of x. Mary gives a dog a juicy steak. Yojo is a cat. Some orange cat is on a blue mat. Is it true that some cat that is not happy is on a mat? If every cat that is on a mat is happy, is it true that some cat that is not happy is on a mat?
Or just try your own sentences