Anchor: a man in a blue sweater is talking to a gray headed lady.
Entailed: A man and lady are talking.
Contradiction: A man is sitting alone.
Contradiction: The hikers have wings.
Contradiction: Starting the climb before dawn will help avoid the extreme heat.
Contradiction: Three kids are swimming in the lake.
Contradiction: When I was a kid we'd camp in Virginia and use a pop-up tent.