Anchor: A boy scaling down rocks without any climbing gear.
Entailed: A boy is climbing down rocks.
Contradiction: A boy is thrown out of a castle tower.
Contradiction: The man is driving his race car toward the finish line.
Contradiction: Decisions are made based on lowering the net present value of capital and operating costs.
Contradiction: The tourists are not welcome.
Contradiction: There are two low elevation areas of land at the center of the caldera.