premise: A man in a colorful shirt and a lady in a white blouse sign copies of books for people. hypothesis: A man in a colorful shirt and a lady in a white blouse give candy to people.
contradiction: The man and woman are either singing copies of books or giving out candy.|contradiction: If a man and a lady sign books for people they do not give them candy.|contradiction: Either the man and lady are signing copies of books or they are giving candy to people.