Text: A person wearing a hat and carrying a knapsack walks uphill on a sand dune under a dark, cloudy sky and leaves the only visible footprints behind.
Entailment: A person in a hat who is carrying a knapsack leaves his footprints behind as he walks up a sand dune under a dark, cloudy sky.
Contradiction: A person wearing a headband and carrying a purse walks downhill on a sand dune under a bright, sunny sky and leaves no footprints.