premise: A little boy with blond-hair stares down at display case featuring cookies and cakes. hypothesis: A boy is walking on a sidewalk, reading a book.
contradiction: The boy cannot be staring down at a display case and reading a book simultaneously.|contradiction: A boy does not have to be little.  If a boy stares at a display case he is not walking and reading a book.|contradiction: A boy cannot be reading while staring down at a display case.