Anchor: To take one obscure but critical  Life on Earth remained entirely one-celled for 3 billion years.
Entailed: For three billion years, the only life-forms on Earth were single-celled organisms.
Contradiction: Single-celled organisms ruled the earth for only a billion years before more complex life-forms came along.
Contradiction: Puppies sleeping in a basket.
Contradiction: The annual growth rate has been falling despite increases in volume.
Contradiction: I have never heard of a Hewlett Packard Ready Writer.
Contradiction: An adult man looking at a child playing.