Anchor: Really good ones are now increasingly rare and quite expensive, and their length, 2 m (over 6 ft), makes them difficult to carry around.
Entailed: Really good ones are becoming scarce and pricy.
Contradiction: The really good ones are becoming scarce because of their size and weight.
Contradiction: The girl kicked the tennis ball.
Contradiction: There is shallow water.
Contradiction: The person is sleeping.
Contradiction: You told me that you would await my true name after the computer was built.