premise: A man with a blue and white backpack and black jeans and jacket walks by a large monument surrounded by a gray fence. hypothesis: A person is cooking hot dogs at the beach.
contradiction: the same person cannot be simultaneously walk by a monument and be cooking hot dogs at the beach at the same time.|contradiction: There are no large monuments and fences on the beach and you cannot cook hot dogs while walking.|contradiction: a man would either be in a monument or in beach.